Add synthetic payment method for LinkCardBrand

[tillh-stripe]

Summary

This pull request adds a “synthetic” payment method for LinkCardBrand.

We don’t receive the LinkCardBrand type as a payment method type in the intent, so we must add it after the fact in PaymentMethodMetadata.

Motivation

BANKCON-14522

Testing

• Added tests
• Modified tests
• Manually verified

Screenshots

Before	After
before screenshot	after screenshot

Changelog

[github-actions]

Diffuse output:

OLD: identity-example-release-base.apk (signature: V1, V2)
NEW: identity-example-release-pr.apk (signature: V1, V2)

          │          compressed          │         uncompressed         
          ├───────────┬───────────┬──────┼───────────┬───────────┬──────
 APK      │ old       │ new       │ diff │ old       │ new       │ diff 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
      dex │   1.9 MiB │   1.9 MiB │  0 B │     4 MiB │     4 MiB │  0 B 
     arsc │     1 MiB │     1 MiB │  0 B │     1 MiB │     1 MiB │  0 B 
 manifest │   2.3 KiB │   2.3 KiB │  0 B │     8 KiB │     8 KiB │  0 B 
      res │ 301.5 KiB │ 301.5 KiB │  0 B │   455 KiB │   455 KiB │  0 B 
   native │   6.2 MiB │   6.2 MiB │  0 B │  15.8 MiB │  15.8 MiB │  0 B 
    asset │   6.8 KiB │   6.8 KiB │  0 B │   6.5 KiB │   6.5 KiB │  0 B 
    other │  85.5 KiB │  85.5 KiB │ -2 B │ 158.7 KiB │ 158.7 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │   9.5 MiB │   9.5 MiB │ -2 B │  21.4 MiB │  21.4 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 20244 │ 20244 │ 0 (+0 -0) 
   types │  6082 │  6082 │ 0 (+0 -0) 
 classes │  4886 │  4886 │ 0 (+0 -0) 
 methods │ 29462 │ 29462 │ 0 (+0 -0) 
  fields │ 17389 │ 17389 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  164 │  164 │  0   
 entries │ 3608 │ 3608 │  0

APK

   compressed    │   uncompressed   │                        
──────────┬──────┼───────────┬──────┤                        
 size     │ diff │ size      │ diff │ path                   
──────────┼──────┼───────────┼──────┼────────────────────────
 28.3 KiB │ -3 B │  62.6 KiB │  0 B │ ∆ META-INF/CERT.SF     
 25.1 KiB │ +1 B │  62.5 KiB │  0 B │ ∆ META-INF/MANIFEST.MF 
──────────┼──────┼───────────┼──────┼────────────────────────
 53.5 KiB │ -2 B │ 125.1 KiB │  0 B │ (total)

[tillh-stripe]

This is identical to InstantDebitsDefinition. Once we move the bank form to a proper UiDefinitionFactory, we can also deduplicate this.

[samer-stripe]

I imagine these updated since US Bank Account wasn't in the list of supported payment method types?

[tillh-stripe]

That’s because of this change. It’ll only show up if linkMode == LinkCardBrand, and we’re restricting this to our test merchants for now.

[jaynewstrom-stripe]

Should we model synthetics differently? It doesn't feel like this logic belongs here as is.

[tillh-stripe]

I don’t see them as being very different from “normal” payment method definitions.

[jaynewstrom-stripe]

Do we need to make sure they also have card as an available payment method?

[tillh-stripe]

No, we only receive the LinkCardBrand mode if there’s a card type (see here).