[Cocoa] WebContent process needs to grant bootstrap extension for fon…

…t server access

https://bugs.webkit.org/show_bug.cgi?id=258953
<rdar://108687466>

Reviewed by Per Arne Vollan.

The Sandbox extensions needed for dynamic fonts needs to enable the webkit mach
bootstrap extension, otherwise message filtering will block calls needed for
the feature to work properly.

* Source/WebKit/UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::creationParameters):

Canonical link: https://commits.webkit.org/265850@main

Source/WebKit/UIProcess/WebPageProxy.cpp

@@ -9329,7 +9329,7 @@ WebPageCreationParameters WebPageProxy::creationParameters(WebProcessProxy& proc
 
 #if HAVE(STATIC_FONT_REGISTRY)
     if (preferences().shouldAllowUserInstalledFonts())
-        parameters.fontMachExtensionHandles = process.fontdMachExtensionHandles(SandboxExtension::MachBootstrapOptions::DoNotEnableMachBootstrap);
+        parameters.fontMachExtensionHandles = process.fontdMachExtensionHandles(SandboxExtension::MachBootstrapOptions::EnableMachBootstrap);
 #endif
 #if HAVE(APP_ACCENT_COLORS)
     parameters.accentColor = pageClient().accentColor();