[native_assets_builder] Report dart sources as dependencies of hooks #1010

Job	Run time
build (ubuntu, stable, native_assets_builder, false)	5m 30s
build (ubuntu, stable, native_assets_cli, false)	1m 45s
build (ubuntu, stable, native_toolchain_c, false)	1m 48s
build (ubuntu, dev, native_assets_builder, false)	5m 16s
build (ubuntu, dev, native_assets_cli, false)	2m 10s
build (ubuntu, dev, native_toolchain_c, false)	1m 58s
build (macos, stable, native_assets_builder, false)	5m 39s
build (macos, stable, native_assets_cli, false)	1m 4s
build (macos, stable, native_toolchain_c, false)	2m 2s
build (macos, dev, native_assets_builder, false)	6m 15s
build (macos, dev, native_assets_cli, false)	1m 59s
build (macos, dev, native_toolchain_c, false)	1m 42s
build (windows, stable, native_assets_builder, false)	7m 26s
build (windows, stable, native_assets_cli, false)	2m 27s
build (windows, stable, native_toolchain_c, false)	3m 50s
build (windows, dev, native_assets_builder, false)	9m 51s
build (windows, dev, native_assets_cli, false)	2m 47s
build (windows, dev, native_toolchain_c, false)	4m 22s
coverage-finished	6s
	1h 7m 57s

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