Tests

[mypyc] Specialize `s[i] == 'x'` to a codepoint int compare #22491

Job	Run time
Test mypyc suite with 32-bit Python	12m 13s
Test suite with py315-ubuntu, mypyc-compiled	16m 10s
Test suite with py314-ubuntu, mypyc-compiled	16m 46s
Test suite with py312-ubuntu	10m 19s
Test suite with py311-ubuntu	9m 45s
mypyc runtime tests with py310-ubuntu	7m 11s
mypyc runtime tests with py313-macos	7m 57s
Test suite with py314-windows-64	25m 47s
Test suite with py313-ubuntu, mypyc-compiled	16m 20s
Test suite with py310-ubuntu, mypyc-compiled	17m 26s
Parallel tests with py314-ubuntu, mypyc-compiled	25m 43s
Type check our own code (py310-windows-64)	2m 16s
Parallel tests with py314-windows-64, interpreted	11m 9s
Test suite with py314t-ubuntu, mypyc-compiled	17m 38s
Type check our own code (py310-ubuntu)	1m 14s
Parallel tests with py314-ubuntu, interpreted	25m 42s
Formatting and code style with Black + ruff	1m 52s
	3h 45m 28s

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