Migrates to package:web and js_interop #741

Job	Run time
cancel-previous-workflow	3s
android \| ubuntu-latest \| stable	1m 8s
android \| ubuntu-latest \| beta	1m 5s
linux \| ubuntu-latest \| stable	1m 28s
linux \| ubuntu-latest \| beta	1m 30s
ios \| macos-latest \| stable	1m 24s
macos \| macos-latest \| stable	1m 4s
windows \| windows-latest \| stable	2m 28s
windows \| windows-latest \| beta	2m 27s
analyze / analyze	1m 25s
analyze / cancel-previous-workflow	3s
analyze / package-analysis	1m 23s
	15m 28s

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