Bugfix: Ensure that we take a copy of the sys.modules before iteratin… #4084

Job	Run time
test_docs	51s
test_without_debugpy (ubuntu-latest, 3.10)	2m 16s
check_release	1m 36s
Make SDist	23s
Test Minimum Versions	2m 45s
link_check	2m 27s
Test Lint	1m 14s
Test Prereleases	2m 32s
build (ubuntu-latest, qt6, 3.10)	2m 46s
build (ubuntu-latest, qt5, 3.10)	2m 53s
build (ubuntu-latest, qt6, pypy-3.11)	3m 34s
build (ubuntu-latest, qt5, 3.14)	2m 44s
build (ubuntu-latest, qt6, 3.11)	2m 41s
build (ubuntu-latest, qt5, pypy-3.11)	3m 24s
build (windows-latest, qt6, 3.11)	4m 53s
build (macos-latest, qt5, pypy-3.11)	4m 46s
build (ubuntu-latest, qt6, 3.13)	2m 33s
build (ubuntu-latest, qt6, 3.12)	2m 46s
build (windows-latest, qt5, 3.14)	4m 15s
build (windows-latest, qt6, 3.10)	5m 4s
build (windows-latest, qt6, 3.13)	6m 2s
build (windows-latest, qt5, 3.10)	3m 51s
build (macos-latest, qt6, 3.11)	2m 41s
build (macos-latest, qt5, 3.10)	3m 6s
build (macos-latest, qt6, 3.12)	3m 20s
build (macos-latest, qt6, 3.13)	2m 52s
build (windows-latest, qt6, 3.12)	4m 52s
build (macos-latest, qt5, 3.14)	2m 56s
build (windows-latest, qt6, pypy-3.11)	6m 42s
build (macos-latest, qt6, 3.10)	3m 42s
build (windows-latest, qt5, pypy-3.11)	5m 57s
build (macos-latest, qt6, pypy-3.11)	5m 18s
Install from SDist and Test	2m 20s
coverage	14s
	1h 50m 16s

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