Made IOPubThread constructor backward compatible #3882

Job	Run time
test_without_debugpy (ubuntu-latest, 3.10)	18s
check_release	19s
Test Lint	17s
link_check	23s
test_docs	14s
Test Minimum Versions	15s
Make SDist	15s
Test Prereleases	19s
build (ubuntu-latest, qt5, pypy-3.11)	22s
build (ubuntu-latest, qt5, 3.10)	17s
build (windows-latest, qt6, 3.13)	24s
build (windows-latest, qt5, 3.10)	25s
build (windows-latest, qt6, 3.10)	24s
build (windows-latest, qt6, pypy-3.11)	17s
build (ubuntu-latest, qt6, 3.12)	26s
build (macos-latest, qt5, 3.10)	13s
build (ubuntu-latest, qt6, 3.10)	27s
build (windows-latest, qt6, 3.12)	25s
build (macos-latest, qt6, 3.13)	19s
build (macos-latest, qt6, 3.10)	16s
build (ubuntu-latest, qt6, pypy-3.11)	22s
build (macos-latest, qt5, 3.14)	19s
build (ubuntu-latest, qt6, 3.13)	27s
build (macos-latest, qt6, pypy-3.11)	15s
build (ubuntu-latest, qt5, 3.14)	18s
build (windows-latest, qt5, 3.14)	24s
build (macos-latest, qt6, 3.12)	16s
build (windows-latest, qt5, pypy-3.11)	17s
build (macos-latest, qt5, pypy-3.11)	16s
build (windows-latest, qt6, 3.11)	24s
build (macos-latest, qt6, 3.11)	28s
build (ubuntu-latest, qt6, 3.11)	26s
Install from SDist and Test	1s
coverage	1s
	10m 49s

Provide feedback