Tests

Fix MixedType->equals(ErrorType) #21034

Job	Run time
Determine levels tests matrix	17s
Integration tests (windows-latest)	1m 30s
Integration tests (ubuntu-latest)	35s
Tests (8.0, windows-latest)	2m 56s
Tests (7.4, ubuntu-latest)	2m 23s
Tests (8.1, ubuntu-latest)	1m 32s
Tests (8.0, ubuntu-latest)	1m 41s
Tests (8.1, windows-latest)	2m 38s
Tests (7.4, windows-latest)	5m 24s
Tests (8.2, ubuntu-latest)	1m 31s
Tests (8.3, windows-latest)	2m 48s
Tests (8.2, windows-latest)	2m 50s
Tests (8.4, ubuntu-latest)	1m 33s
Tests (8.3, ubuntu-latest)	1m 35s
Tests (8.4, windows-latest)	2m 51s
Levels tests	0s
	32m 4s

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