Fix docs build: resolve `InteractiveShell` forward reference #3978

Job	Run time
test_without_debugpy (ubuntu-latest, 3.10)	2m 11s
Test Lint	48s
test_docs	48s
check_release	1m 49s
Test Prereleases	2m 30s
link_check	3m 31s
Test Minimum Versions	2m 43s
Make SDist	25s
build (windows-latest, qt5, 3.10)	3m 27s
build (ubuntu-latest, qt5, 3.14)	2m 33s
build (windows-latest, qt5, 3.14)	3m 27s
build (ubuntu-latest, qt6, 3.10)	2m 41s
build (ubuntu-latest, qt6, pypy-3.11)	3m 19s
build (macos-latest, qt6, 3.10)	3m 16s
build (windows-latest, qt6, pypy-3.11)	3m 32s
build (ubuntu-latest, qt6, 3.11)	2m 37s
build (windows-latest, qt6, 3.10)	3m 26s
build (macos-latest, qt5, 3.10)	3m 8s
build (ubuntu-latest, qt5, 3.10)	2m 45s
build (windows-latest, qt6, 3.13)	3m 28s
build (ubuntu-latest, qt6, 3.13)	2m 26s
build (windows-latest, qt5, pypy-3.11)	3m 33s
build (macos-latest, qt6, 3.12)	3m 2s
build (macos-latest, qt6, pypy-3.11)	3m 34s
build (ubuntu-latest, qt5, pypy-3.11)	3m 24s
build (windows-latest, qt6, 3.12)	3m 29s
build (windows-latest, qt6, 3.11)	3m 25s
build (ubuntu-latest, qt6, 3.12)	2m 48s
build (macos-latest, qt6, 3.11)	2m 57s
build (macos-latest, qt5, 3.14)	2m 57s
build (macos-latest, qt5, pypy-3.11)	3m 32s
build (macos-latest, qt6, 3.13)	2m 34s
Install from SDist and Test	2m 26s
coverage	1s
	1h 32m 32s

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