feat: frontend-component-header to 8.0.0, to rm Maintenance link

[kdmccormick]

Description

BREAKING CHANGE: Removes Maintenance link in header, part of openedx/openedx-platform#36263 (the immediate purpose of this upgrade)

Full diff:
openedx/frontend-component-header@v6.2.0...v8.0.0

Best Practices Checklist

We're trying to move away from some deprecated patterns in this codebase. Please
check if your PR meets these recommendations before asking for a review:

• Any new files are using TypeScript (.ts, .tsx).
• Deprecated propTypes, defaultProps, and injectIntl patterns are not used in any new or modified code.
• Tests should use the helpers in src/testUtils.tsx (specifically initializeMocks)
• Do not add new fields to the Redux state/store. Use React Context to share state among multiple components.
• Use React Query to load data from REST APIs. See any apiHooks.ts in this repo for examples.
• All new i18n messages in messages.ts files have a description for translators to use.
• Imports avoid using ../. To import from parent folders, use @src, e.g. import { initializeMocks } from '@src/testUtils'; instead of from '../../../../testUtils'

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.68%. Comparing base (8fe5fb6) to head (dfc5266).
⚠️ Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2521      +/-   ##
==========================================
- Coverage   94.68%   94.68%   -0.01%     
==========================================
  Files        1203     1203              
  Lines       26865    26877      +12     
  Branches     6026     6031       +5     
==========================================
+ Hits        25438    25448      +10     
- Misses       1357     1359       +2     
  Partials       70       70              

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[kdmccormick]

@feanil , @bradenmacdonald , @brian-smith-tcril , could one of you take a look?

[brian-smith-tcril]

LGTM!

Kind of frustrating that codecov is doing the up/down by 0.01% thing here but it's definitely not the fault of this PR.

[bradenmacdonald]

Kind of frustrating that codecov is doing the up/down by 0.01% thing here but it's definitely not the fault of this PR.

For that reason, we've made the project check optional at reviewer's discretion on this repo.