Arguments without a default cannot follow attributes with one #13191

Job	Run time
Test suite with Python nightly	13m 59s
Test mypyc suite with 32-bit Python	6m 33s
Test suite with py38-ubuntu, mypyc-compiled	18m 23s
Test suite with py38-windows-64	19m 55s
Test suite with py39-ubuntu	18m 3s
Test suite with py310-ubuntu	15m 57s
Test suite with py311-ubuntu, mypyc-compiled	15m 55s
Test suite with py312-ubuntu, mypyc-compiled	18m 9s
mypyc runtime tests with py39-macos	7m 26s
mypyc runtime tests with py38-debug-build-ubuntu	4m 23s
Type check our own code (py38-ubuntu)	1m 52s
Type check our own code (py38-windows-64)	2m 46s
Formatting and code style with Black + ruff	36s
	2h 23m 57s

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