cleanup: Return braced initialiser list where possible. #2083

Job	Run time
Check for translatable strings	17s
Verify release/signatures	7s
Validate PR	7s
Alpine (full, Debug)	4m 48s
Alpine (static) (Release)	3m 8s
Debian (minimal, Debug)	2m 50s
Fedora with ASAN (full, Debug)	3m 55s
Clang-Tidy	6m 22s
Update nightly release tag	3s
Ubuntu LTS (full, Release)	3m 44s
macOS user (x86_64)	11m 0s
Flatpak	4m 33s
AppImage on Alpine (full, Release)	3m 54s
Docs	9m 3s
Android (arm64-v8a, Release, 6.2.4)	3m 14s
Windows (x86_64, Release)	6m 45s
macOS distributable (arm64)	2m 56s
Test macOS distributable (arm64)	25s
Test AppImage	28s
Test Flatpak	1m 2s
Test Windows (x86_64, Release)	41s
	1h 9m 22s

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