Refactor: upgrade to Next 15

[compojoom]

What it solves

This resolves #3765
Sadly turbo doesn't work right now due to this bug: vercel/next.js#71819

Resolves #

• updates nextjs to v15
• updates react to v19rc...
• @testing-library to v16
• jest v9 (and all other jest related packages to latest version)

How this PR fixes it

This PR updates a lot of dependencies. I tried to make it easy to review by going commit by commit.

How to test it

Screenshots

Checklist

• I've tested the branch on mobile 📱
• I've documented how it affects the analytics (if at all) 📊
• I've written a unit/e2e test for it (if applicable) 🧑‍💻

[github-actions]

Branch preview

✅ Deploy successful!

Website:
https://update_next_15--walletweb.review.5afe.dev/home?safe=eth:0xA77DE01e157f9f57C7c4A326eeE9C4874D0598b6

Storybook:
https://update_next_15--walletweb.review.5afe.dev/storybook/

[github-actions]

📦 Next.js Bundle Analysis for safe-wallet-web

This analysis was generated by the Next.js Bundle Analysis action. 🤖

⚠️ Global Bundle Size Increased

Page	Size (compressed)
global	1.01 MB (🟡 +15.28 KB)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

Forty-four Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/	512 B (🟡 +1 B)	1.01 MB
/403	593 B (🟡 +16 B)	1.01 MB
/404	702 B (🟡 +4 B)	1.01 MB
/_error	238 B (🟡 +10 B)	1.01 MB
/_offline	1.06 KB (🟢 -32 B)	1.01 MB
/addOwner	553 B (🟡 +19 B)	1.01 MB
/address-book	25.93 KB (🟢 -165 B)	1.03 MB
/apps	47.73 KB (🟢 -711 B)	1.05 MB
/apps/bookmarked	462 B (🟡 +17 B)	1.01 MB
/apps/custom	39.3 KB (🟢 -772 B)	1.04 MB
/apps/open	55.28 KB (🟢 -80 B)	1.06 MB
/balances	37.56 KB (🟢 -724 B)	1.04 MB
/balances/nfts	18.77 KB (🟢 -446 B)	1.02 MB
/cookie	8.75 KB (🟡 +7 B)	1.01 MB
/home	59.25 KB (🟢 -275 B)	1.06 MB
/imprint	1.39 KB (🟡 +28 B)	1.01 MB
/licenses	4.95 KB (🟢 -25 B)	1.01 MB
/new-safe/advanced-create	34.86 KB (🟢 -173 B)	1.04 MB
/new-safe/create	34.11 KB (🟢 -189 B)	1.04 MB
/new-safe/load	14.5 KB (🟢 -278 B)	1.02 MB
/privacy	14.03 KB (🟡 +14 B)	1.02 MB
/settings	465 B (🟡 +14 B)	1.01 MB
/settings/appearance	7.71 KB (🟢 -354 B)	1.01 MB
/settings/cookies	7.33 KB (🟢 -362 B)	1.01 MB
/settings/data	7.22 KB (🟢 -365 B)	1.01 MB
/settings/environment-variables	8.78 KB (🟢 -396 B)	1.01 MB
/settings/modules	9.47 KB (🟢 -376 B)	1.01 MB
/settings/notifications	26.82 KB (🟢 -236 B)	1.03 MB
/settings/safe-apps	23.51 KB (🟢 -444 B)	1.03 MB
/settings/security	7.75 KB (🟢 -367 B)	1.01 MB
/settings/setup	46.22 KB (🟢 -810 B)	1.05 MB
/share/safe-app	9.33 KB (🟢 -409 B)	1.01 MB
/stake	622 B (🟡 +26 B)	1.01 MB
/swap	754 B (🟡 +21 B)	1.01 MB
/terms	578 B (🟡 +19 B)	1.01 MB
/transactions	87.54 KB (🟡 +13.66 KB)	1.09 MB
/transactions/history	87.49 KB (🟡 +13.65 KB)	1.09 MB
/transactions/messages	39.05 KB (🟢 -336 B)	1.04 MB
/transactions/msg	29.74 KB (🟡 +25 B)	1.03 MB
/transactions/queue	31.14 KB (🟢 -351 B)	1.04 MB
/transactions/tx	21.3 KB (🟡 +34 B)	1.03 MB
/wc	702 B (🟡 +15 B)	1.01 MB
/welcome	6.81 KB (🟡 +12 B)	1.01 MB
/welcome/accounts	398 B (🟡 +19 B)	1.01 MB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	74.29% (+0.03% 🔼)	14068/18937
🔴	Branches	52.64% (+0.07% 🔼)	3488/6626
🔴	Functions	58.13% (+0.08% 🔼)	2056/3537
🟡	Lines	75.91% (+0.03% 🔼)	12779/16834

Show new covered files 🐣

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / types.ts	100%	100%	100%	100%

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / index.tsx	100%	50% (-50% 🔻)	100%	100%
🟢	... / ExecuteForm.tsx	95.83%	84.62% (-1.87% 🔻)	100%	95.65%
🟢	... / index.tsx	82.35% (-0.5% 🔻)	80.95%	40%	87.5% (-0.38% 🔻)
🟢	... / index.tsx	94.12% (-0.33% 🔻)	87.5%	100%	93.75% (-0.37% 🔻)
🔴	... / index.tsx	38.18% (-1.1% 🔻)	0%	0%	38.89% (-1.11% 🔻)

Test suite run success

1619 tests passing in 217 suites.

Report generated by 🧪jest coverage report action from c9ded60

[francovenica]

The same issue reported in the mui-6 ticket about the font being different is present here as well.

[francovenica]

NOTE: at the time of making this comment the ticket has not been peer reviewed. I've been asked to QA it anyways.

The rest of the ticket looks fine. I didn't found any other issues.
I run full regression on this branch just in case as well. Only 1 failed case that I've checked manually and it works fine

[katspaugh]

LGTM!

As clarified with @compojoom, the many changes in JSX formatting (sx objects instead of inline props) stem from MUI v6 where these inline props have been deprecated.