[Qt] fix a issue where "command line options"-action overwrite "Preference"-action (on OSX)
[Qt] fix a issue where "command line options"-action overwrite "Preference"-action (on OSX)

- fixes #5800

Conflicts:
	src/qt/bitcoingui.cpp

Rebased-From: 9bbb880be44dbc378bdd3210eed42eaa77efb774
Github-Pull: #5858

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