Mark IOSurface functions and methods as safe #3410

Job	Run time
Check formatting	11s
Check MSRV	59s
Lint macOS x86_64	3m 55s
Lint iOS ARMv7s	4m 6s
Lint visionOS Aarch64 simulator	4m 12s
Lint GNUStep + exceptions	1m 42s
Lint header-translator	33s
Lint test-assembly	40s
Test macOS 15 Aarch64	2m 1s
Assembly tests	56s
Verify header translator output	2m 33s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Check framework features	0s
Test Compiler-RT	34s
Test GNUStep with libobjc2 v1.9	1m 8s
Compiler UI	45s
Test on iOS simulator w. dinghy	0s
Test GNUStep with libobjc2 v2.0	1m 29s
Test GNUStep with libobjc2 v2.1 on nightly	1m 5s
Test GNUStep 32bit	1m 20s
	28m 9s

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