Refactoring all-the-icons functions #5476

Job	Run time
test (ubuntu-latest, 27.2, false)	2m 5s
test (ubuntu-latest, 28.2, false)	2m 29s
test (ubuntu-latest, 29.4, false)	2m 25s
test (macos-latest, 28.2, false)	4m 12s
test (macos-latest, 29.4, false)	3m 51s
test (windows-latest, 27.2, false)	3m 24s
test (windows-latest, 28.2, false)	3m 34s
test (windows-latest, 29.4, false)	3m 26s
test (ubuntu-latest, snapshot, true)	1m 27s
test (macos-latest, snapshot, true)	3m 13s
test (windows-latest, snapshot, true)	5m 4s
	35m 10s

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