chore!: remove prefix resolver, passthrough prefix resolver, and accessLevel #1831

Job	Run time
test / test-dart-vm (3.0.1)	2m 6s
test / test-dart-vm (stable)	2m 29s
dart2js_test / test-dart-2js (3.0.1, chrome)	4m 38s
dart2js_test / test-dart-2js (3.0.1, firefox)	4m 34s
ddc_test / test-dart-ddc (3.0.1, chrome)	3m 31s
dart2js_test / test-dart-2js (stable, chrome)	4m 33s
ddc_test / test-dart-ddc (3.0.1, firefox)	3m 52s
ddc_test / test-dart-ddc (stable, chrome)	3m 26s
dart2js_test / test-dart-2js (stable, firefox)	4m 25s
ddc_test / test-dart-ddc (stable, firefox)	3m 47s
native_test / test-dart-native (macos-latest)	3m 44s
native_test / test-dart-native (windows-latest)	3m 19s
	44m 24s

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