Tests

[mypyc] feat: improve LoadLiteral annotation determinism #19983

Job	Run time
Test mypyc suite with 32-bit Python	9m 4s
mypyc runtime tests with py313-macos	5m 43s
Test suite with py312-ubuntu	10m 10s
Parallel tests with py314-ubuntu, interpreted	23m 31s
Test suite with py313-ubuntu, mypyc-compiled	1m 0s
Test suite with py314t-ubuntu, mypyc-compiled	1m 18s
Parallel tests with py314-ubuntu, mypyc-compiled	1m 4s
Test suite with py314-windows-64	27m 24s
Test suite with py311-ubuntu	9m 11s
mypyc runtime tests with py310-ubuntu	5m 16s
Test suite with py310-ubuntu, mypyc-compiled	1m 13s
Type check our own code (py310-ubuntu)	1m 21s
Test suite with py314-ubuntu, mypyc-compiled	1m 3s
Type check our own code (py310-windows-64)	4m 24s
Formatting and code style with Black + ruff	1m 49s
	1h 43m 31s

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