test(@angular/build): remove isViteRun from dev-server test harness #9905

Job	Run time
build-e2e-windows	3m 20s
lint	2m 11s
build	2m 5s
Browser Compatibility Tests	3m 1s
test	3m 1s
publish-snapshots	3m 0s
e2e-windows (24, esbuild, 1)	1m 42s
e2e-windows (24, esbuild, 0)	1m 22s
e2e-windows (24, esbuild, 4)	1m 35s
e2e-windows (24, webpack, 0)	1m 17s
e2e-windows (24, webpack, 4)	1m 43s
e2e-windows (24, esbuild, 5)	1m 17s
e2e-windows (24, webpack, 5)	1m 17s
e2e-windows (24, webpack, 2)	1m 42s
e2e-windows (24, esbuild, 3)	1m 36s
e2e-windows (24, webpack, 3)	1m 16s
e2e-windows (24, esbuild, 2)	1m 13s
e2e-windows (24, webpack, 1)	1m 22s
e2e-snapshots	1s
e2e-package-managers	1s
e2e	1s
	34m 3s

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