fix(@angular/build): enable unit-test builder watch outside CI #1572

Job	Run time
build	16s
lint	2m 12s
e2e_windows (windows-2025, 22, npm, 0)	28s
e2e_windows (windows-2025, 22, npm, 3)	29s
e2e_windows (windows-2025, 22, esbuild, 1)	27s
e2e_windows (windows-2025, 22, esbuild, 0)	34s
e2e_windows (windows-2025, 22, npm, 2)	44s
e2e_windows (windows-2025, 22, npm, 1)	1m 3s
e2e_windows (windows-2025, 22, esbuild, 4)	28s
e2e_windows (windows-2025, 22, esbuild, 2)	27s
e2e_windows (windows-2025, 22, npm, 4)	34s
e2e_windows (windows-2025, 22, npm, 5)	34s
e2e_windows (windows-2025, 22, esbuild, 5)	27s
e2e_windows (windows-2025, 22, esbuild, 3)	31s
publish-snapshots	0s
e2e	0s
test	0s
Browser Compatibility Tests	0s
e2e-package-managers	0s
e2e-snapshots	0s
	9m 14s

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