first round of updates to disable type assertions

[rsun19]

Closes: RHOAIENG-4336

Description

We would like to limit the use of type assertions as much as possible. However, a large amount of these assertions are made in a type-cast like way making it very tricky to type check them. We may need to resort to using as in the type guard in those cases.

How Has This Been Tested?

npm run test

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Commits have been squashed into descriptive, self-contained units of work (e.g. 'WIP' and 'Implements feedback' style messages have been removed)
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[codecov]

Codecov Report

Attention: Patch coverage is 71.50538% with 53 lines in your changes missing coverage. Please review.

Project coverage is 78.45%. Comparing base (3d62686) to head (666ccb4).

❗ Current head 666ccb4 differs from pull request most recent head 0af9464

Please upload reports for the commit 0af9464 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2879      +/-   ##
==========================================
- Coverage   78.54%   78.45%   -0.10%     
==========================================
  Files        1138     1139       +1     
  Lines       24146    24224      +78     
  Branches     6098     6151      +53     
==========================================
+ Hits        18966    19005      +39     
- Misses       5180     5219      +39     

Files	Coverage Δ
frontend/src/api/errorUtils.ts	100.00% <100.00%> (ø)
frontend/src/api/modelRegistry/errorUtils.ts	100.00% <100.00%> (ø)
frontend/src/api/pipelines/errorUtils.ts	100.00% <100.00%> (ø)
frontend/src/api/prometheus/serving.ts	95.91% <100.00%> (+0.79%)	⬆️
frontend/src/api/trustyai/errorUtils.ts	85.71% <100.00%> (-1.79%)	⬇️
frontend/src/app/AppContext.ts	100.00% <100.00%> (ø)
frontend/src/components/DocCardBadges.tsx	95.23% <100.00%> (ø)
...end/src/components/FilterSidePanelCategoryItem.tsx	100.00% <100.00%> (ø)
frontend/src/components/OdhDocListItem.tsx	75.60% <100.00%> (ø)
frontend/src/components/ToastNotification.tsx	65.00% <100.00%> (+1.84%)	⬆️
... and 77 more

... and 21 files with indirect coverage changes

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[christianvogt]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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