fix(@angular/build): exclude only source test files with unit-test vitest support #30343
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When using the experimental
unit-test
builder with thevitest
runner and code coverage, the automatic coverage excludes are now adjust to not include the bundled test files. This previously prevent accurate coverage analysis. Vite does this as a convenience but is problematic for the bundling strategy employed by the builder's test setup. To workaround this, the excludes are adjusted here to only automatically exclude the TypeScript source test files.Closes #30333