docs: mention Vitest instead of Karma in README template of workspace… #9337

Job	Run time
lint	1m 50s
build	3m 38s
build-e2e-windows	4m 5s
Browser Compatibility Tests	9m 9s
test	9m 12s
publish-snapshots	5m 19s
e2e-windows (windows-2025, 22, esbuild, 0)	8m 46s
e2e-windows (windows-2025, 22, npm, 0)	8m 46s
e2e-windows (windows-2025, 22, npm, 1)	8m 35s
e2e-windows (windows-2025, 22, npm, 4)	8m 48s
e2e-windows (windows-2025, 22, npm, 2)	8m 46s
e2e-windows (windows-2025, 22, esbuild, 1)	8m 46s
e2e-windows (windows-2025, 22, npm, 5)	8m 45s
e2e-windows (windows-2025, 22, npm, 3)	8m 45s
e2e-windows (windows-2025, 22, esbuild, 3)	8m 48s
e2e-windows (windows-2025, 22, esbuild, 4)	8m 42s
e2e-windows (windows-2025, 22, esbuild, 2)	8m 46s
e2e-windows (windows-2025, 22, esbuild, 5)	8m 46s
e2e	1s
e2e-package-managers	1s
e2e-snapshots	1s
	2h 18m 15s

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