feat: implement module mocking in browser mode #9465

Job	Run time
test-browser (chrome, chromium)	2m 49s
test-browser-windows (chrome, chromium)	5m 14s
lint	50s
test-browser (firefox, firefox)	2m 45s
test-browser-windows (edge, webkit)	5m 37s
test (ubuntu-latest, 18)	9m 34s
test-browser (edge, webkit)	5m 23s
test-ui (ubuntu-latest)	1m 53s
test (ubuntu-latest, 20)	6m 42s
test-ui (macos-14)	1m 37s
test (macos-14, 20)	5m 38s
test-ui (windows-latest)	3m 0s
test (windows-latest, 20)	5m 52s
	56m 54s

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