Test

Migrate TopLevelVariable and GetterSetterCombo element model (#3985) #4879

Job	Run time
test (ubuntu-latest, 3.6.0, main)	4m 56s
test (ubuntu-latest, 3.6.0, packages)	1m 18s
test (ubuntu-latest, dev, main)	5m 21s
test (ubuntu-latest, dev, flutter)	6m 16s
test (ubuntu-latest, dev, packages)	1m 16s
test (ubuntu-latest, dev, sdk-docs)	1m 21s
test (macos-latest, dev, main)	6m 12s
test (windows-latest, dev, main)	4m 55s
	31m 35s

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