fix(@angular/build): provide vitest globals in unit-test builder #1561

Job	Run time
lint	2m 27s
build	24s
e2e_windows (windows-2025, 22, npm, 0)	39s
e2e_windows (windows-2025, 22, npm, 1)	1m 28s
e2e_windows (windows-2025, 22, npm, 3)	1m 26s
e2e_windows (windows-2025, 22, esbuild, 0)	2m 38s
e2e_windows (windows-2025, 22, npm, 5)	1m 4s
e2e_windows (windows-2025, 22, npm, 2)	1m 3s
e2e_windows (windows-2025, 22, esbuild, 1)	1m 4s
e2e_windows (windows-2025, 22, npm, 4)	2m 5s
e2e_windows (windows-2025, 22, esbuild, 2)	57s
e2e_windows (windows-2025, 22, esbuild, 5)	1m 4s
e2e_windows (windows-2025, 22, esbuild, 3)	2m 3s
e2e_windows (windows-2025, 22, esbuild, 4)	1m 3s
publish-snapshots	0s
Browser Compatibility Tests	0s
test	0s
e2e	0s
e2e-snapshots	0s
e2e-package-managers	0s
	19m 25s

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