fix(@angular/build): favor istanbul coverage provider when browser te… #10754

Job	Run time
build-e2e-windows	4m 23s
lint	2m 30s
build	3m 48s
publish-snapshots	5m 58s
Browser Compatibility Tests	11m 20s
test	11m 20s
e2e-windows (24, esbuild, 2)	10m 45s
e2e-windows (24, esbuild, 4)	10m 44s
e2e-windows (24, esbuild, 1)	10m 46s
e2e-windows (24, webpack, 5)	10m 45s
e2e-windows (24, webpack, 2)	10m 45s
e2e-windows (24, webpack, 4)	10m 46s
e2e-windows (24, esbuild, 3)	10m 46s
e2e-windows (24, esbuild, 0)	10m 47s
e2e-windows (24, webpack, 3)	10m 47s
e2e-windows (24, webpack, 1)	10m 3s
e2e-windows (24, esbuild, 5)	10m 43s
e2e-windows (24, webpack, 0)	10m 45s
e2e-snapshots	1s
e2e	1s
e2e-package-managers	1s
	2h 47m 44s

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