Fix helpwindow not having icon #447

Job	Run time
build (windows-2019, 3.8, x86)	6m 55s
build (windows-2019, 3.8, x64)	6m 28s
build (windows-2019, 3.9, x86)	6m 43s
build (windows-2019, 3.9, x64)	5m 59s
build (windows-2019, 3.10, x86)	7m 49s
build (windows-2019, 3.10, x64)	6m 4s
build (windows-2019, 3.11, x86)	7m 48s
build (windows-2019, 3.11, x64)	7m 0s
build (windows-2019, 3.12, x86)	7m 47s
build (windows-2019, 3.12, x64)	6m 53s
build (ubuntu-20.04, 3.8, x64)	7m 52s
build (ubuntu-20.04, 3.9, x64)	7m 51s
build (ubuntu-20.04, 3.10, x64)	7m 52s
build (ubuntu-20.04, 3.11, x64)	7m 51s
build (ubuntu-20.04, 3.12, x64)	7m 49s
build (macos-12, 3.8, x64)	8m 10s
build (macos-12, 3.9, x64)	8m 12s
build (macos-12, 3.10, x64)	9m 3s
build (macos-12, 3.11, x64)	8m 18s
build (macos-12, 3.12, x64)	8m 25s
add-test-result-status-badges	1s
package	1s
upload	1s
	2h 30m 52s

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