Fix restoring from normal to maximized #1028

Job	Run time
build (ubuntu-latest, ci-dev-qt5, 5.15)	21m 59s
build (ubuntu-latest, ci-release-qt5, 5.15)	2m 49s
build (ubuntu-latest, ci-qtwidgets-qt5, 5.15)	2m 15s
build (ubuntu-latest, ci-qtquick-qt5, 5.15)	2m 34s
build (ubuntu-latest, ci-dev-qt6, 6.3.*)	22m 0s
build (ubuntu-latest, ci-release-qt6, 6.3.*)	3m 13s
build (ubuntu-latest, ci-qtwidgets-qt6, 6.3.*)	2m 20s
build (ubuntu-latest, ci-qtquick-qt6, 6.3.*)	2m 22s
build (windows-latest, ci-dev-qt5, 5.15)	21m 51s
build (windows-latest, ci-release-qt5, 5.15)	3m 28s
build (windows-latest, ci-qtwidgets-qt5, 5.15)	2m 30s
build (windows-latest, ci-qtquick-qt5, 5.15)	2m 44s
build (windows-latest, ci-dev-qt6, 6.3.*)	20m 55s
build (windows-latest, ci-release-qt6, 6.3.*)	4m 31s
build (windows-latest, ci-qtwidgets-qt6, 6.3.*)	3m 24s
build (windows-latest, ci-qtquick-qt6, 6.3.*)	3m 32s
build (macos-latest, ci-dev-qt5, 5.15)	22m 1s
build (macos-latest, ci-release-qt5, 5.15)	2m 18s
build (macos-latest, ci-qtwidgets-qt5, 5.15)	2m 22s
build (macos-latest, ci-qtquick-qt5, 5.15)	4m 42s
build (macos-latest, ci-dev-qt6, 6.3.*)	21m 42s
build (macos-latest, ci-release-qt6, 6.3.*)	2m 43s
build (macos-latest, ci-qtwidgets-qt6, 6.3.*)	5m 0s
build (macos-latest, ci-qtquick-qt6, 6.3.*)	2m 21s
build (ubuntu-latest, ci-python-qt6, 6.6.0, 0, llvm, shiboken6-generator==6.6.0 pyside6==6.6.0)	3m 46s
	3h 9m 22s

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