Tests

[librt.internal] Make various functions take positional-only args #20288

Job	Run time
Test mypyc suite with 32-bit Python	8m 47s
Test suite with py312-ubuntu	10m 4s
mypyc runtime tests with py310-ubuntu	5m 51s
Type check our own code (py310-ubuntu)	1m 46s
Test suite with py314-windows-64	31m 53s
Test suite with py314t-ubuntu, mypyc-compiled	17m 39s
Test suite with py310-ubuntu, mypyc-compiled	15m 20s
mypyc runtime tests with py313-macos	7m 7s
Test suite with py311-ubuntu	9m 36s
Parallel tests with py314-ubuntu, interpreted	24m 19s
Test suite with py314-ubuntu, mypyc-compiled	14m 24s
Test suite with py313-ubuntu, mypyc-compiled	14m 43s
Type check our own code (py310-windows-64)	2m 20s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 47s
Formatting and code style with Black + ruff	1m 58s
	3h 13m 34s

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