fix(@angular/build): exclude .angular from coverage in vitest

[cexbrayat]

PR Checklist

Please check to confirm your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular-cli/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the new behavior?

Similar to 3478aa3 but for vitest.

This avoids having to manually list .angular and all config files in angular.json

Does this PR introduce a breaking change?

• Yes
• No

Other information

[clydin]

Thank you again for the contribution.

Since the .angular directory should be covered with the introduction of the default Vitest coverage excludes, maybe reword the commit message around providing default excludes?

[cexbrayat]

@clydin I updated the PR, PTAL

[clydin]

LGTM.

Can you rebase to fix the conflicts?

[cexbrayat]

@clydin Done, thanks for the review

[clydin]

Looks like you might have missed a conflict in the rebase.

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