Web: don't overwrite cursor with `CursorIcon::Default` #6258

Job	Run time
Check for typos	16s
Check formatting	12s
Run cargo-deny on Android	21s
Run cargo-deny on iOS	27s
Test stable Windows 64bit MSVC	2m 41s
Run cargo-deny on Linux	23s
Test stable Windows 32bit MSVC	3m 0s
Test stable Windows 64bit GNU	2m 13s
Test stable Windows 32bit GNU	2m 11s
Run cargo-deny on macOS	23s
Test stable Linux 32bit	1m 55s
Run cargo-deny on Redox OS	23s
Run cargo-deny on web	23s
Test stable Linux 64bit	1m 46s
Run cargo-deny on Windows	22s
Test stable X11	1m 41s
Test stable Wayland	1m 41s
Test stable Android	1m 4s
Test stable Redox OS	31s
Test stable macOS	1m 7s
Test stable iOS x86_64	1m 20s
Test stable iOS Aarch64	45s
Test stable web	58s
Test nightly Windows 64bit MSVC	1m 27s
Test nightly Windows 32bit MSVC	1m 44s
Test nightly Windows 64bit GNU	2m 22s
Test nightly Windows 32bit GNU	2m 0s
Test nightly Linux 32bit	1m 52s
Test nightly Linux 64bit	1m 41s
Test nightly X11	1m 32s
Test nightly Wayland	1m 29s
Test nightly Android	1m 16s
Test nightly Redox OS	30s
Test nightly macOS	1m 9s
Test nightly iOS x86_64	1m 9s
Test nightly iOS Aarch64	1m 2s
Test nightly web	1m 13s
Test 1.70.0 Windows 64bit MSVC	1m 5s
Test 1.70.0 Windows 32bit MSVC	57s
Test 1.70.0 Windows 64bit GNU	1m 17s
Test 1.70.0 Windows 32bit GNU	1m 21s
Test 1.70.0 Linux 32bit	1m 14s
Test 1.70.0 Linux 64bit	55s
Test 1.70.0 X11	48s
Test 1.70.0 Wayland	53s
Test 1.70.0 Redox OS	22s
Test 1.70.0 macOS	48s
Test 1.70.0 iOS x86_64	31s
Test 1.70.0 iOS Aarch64	31s
Test 1.70.0 web	40s
Test 1.70.0 Android	45s
Test nightly web Atomic	1m 11s
	59m 47s

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