Avoid unnecessary call to sandbox_enable_state_flag

[pvollan]

e2a7a06

Avoid unnecessary call to sandbox_enable_state_flag
https://bugs.webkit.org/show_bug.cgi?id=257981
rdar://110667778

Reviewed by Chris Dumez.

Calling sandbox_enable_state_flag with the variable BlockIOKitInWebContentSandbox is only needed
when WEBCONTENT_GPU_SANDBOX_EXTENSIONS_BLOCKING is not enabled. This patch also removes an
obsolete sandbox rule.

* Source/WebKit/Resources/SandboxProfiles/ios/com.apple.WebKit.WebContent.sb.in:
* Source/WebKit/WebProcess/WebPage/WebPage.cpp:
(WebKit::m_appHighlightsVisible):

Canonical link: https://commits.webkit.org/265122@main

f1c6523

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt		✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv	❌ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim
✅ 🛠 🧪 merge	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash f1c6523)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt		✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv	❌ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim
✅ 🛠 🧪 merge	✅ 🛠 watch
	✅ 🛠 watch-sim

[pvollan]

Thanks for reviewing!

[webkit-commit-queue]

Committed 265122@main (e2a7a06): https://commits.webkit.org/265122@main

Reviewed commits have been landed. Closing PR #14889 and removing active labels.