Tests

Add function definition notes for `too_many_positional_arguments` errors #22116

Job	Run time
Test mypyc suite with 32-bit Python	11m 18s
mypyc runtime tests with py310-ubuntu	7m 23s
mypyc runtime tests with py313-macos	7m 4s
Test suite with py312-ubuntu	9m 53s
Test suite with py313-ubuntu, mypyc-compiled	15m 43s
Test suite with py311-ubuntu	9m 28s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 14s
Parallel tests with py314-ubuntu, interpreted	25m 54s
Test suite with py314-ubuntu, mypyc-compiled	15m 51s
Test suite with py310-ubuntu, mypyc-compiled	16m 42s
Test suite with py314t-ubuntu, mypyc-compiled	18m 37s
Type check our own code (py310-ubuntu)	1m 9s
Parallel tests with py314-windows-64, interpreted	11m 56s
Type check our own code (py310-windows-64)	2m 5s
Test suite with py314-windows-64	28m 38s
Formatting and code style with Black + ruff	1m 52s
	3h 31m 47s

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