Refactoring all-the-icons functions #5472

Job	Run time
test (ubuntu-latest, 27.2, false)	2m 35s
test (ubuntu-latest, 28.2, false)	2m 29s
test (ubuntu-latest, 29.4, false)	2m 21s
test (macos-latest, 28.2, false)	4m 35s
test (macos-latest, 29.4, false)	3m 36s
test (windows-latest, 27.2, false)	3m 2s
test (windows-latest, 28.2, false)	4m 6s
test (windows-latest, 29.4, false)	4m 8s
test (ubuntu-latest, snapshot, true)	1m 23s
test (macos-latest, snapshot, true)	2m 58s
test (windows-latest, snapshot, true)	5m 45s
	36m 58s

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