Handle QEvent::FileOpen events on macOS #1024

Job	Run time
build-flatpak	3m 46s
build-windows-mingw	12m 40s
build-deb (debian:11)	2m 57s
build-rpm (fedora:38, gcc, 5)	4m 23s
build-deb (debian:12)	3m 8s
build-rpm (fedora:39, gcc, 5)	4m 14s
build-deb (ubuntu:22.04)	3m 3s
reuse-lint	13s
build-rpm (opensuse/tumbleweed:latest, gcc, 5)	3m 22s
build-deb (ubuntu:23.10)	3m 18s
build-rpm (fedora:38, clang)	3m 54s
build-rpm (fedora:39, clang)	4m 47s
build-rpm (opensuse/tumbleweed:latest, 6)	3m 48s
build-macos / build-macos (arm64)	7m 26s
build-macos / build-macos (x86_64)	7m 21s
build-windows-msvc (msvc) / build-windows-msvc	13m 51s
	1h 22m 11s

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