Fixes this test failure on macOS 10.14:
MonoTouchFixtures.WebKit.WKPreferencesTest
[FAIL] TextInteractionEnabledTest : Getter
Expected: No Exception to be thrown
But was: <Foundation.ObjCException: NSInvalidArgumentException: -[WKPreferences setTextInteractionEnabled:]: unrecognized selector sent to instance 0x7fa228f12640
at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSend_bool(intptr,intptr,bool)
at WebKit.WKPreferences.set__OldTextInteractionEnabled (System.Boolean value) [0x0002c] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/build/mac/mobile/WebKit/WKPreferences.g.cs:482
at WebKit.WKPreferences.set_TextInteractionEnabled (System.Boolean value) [0x00000] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/WKWebKit/WKPreferences.cs:32
at MonoTouchFixtures.WebKit.WKPreferencesTest+<>c__DisplayClass0_0.<TextInteractionEnabledTest>b__0 () [0x00000] in /Users/builder/azdo/_work/1/s/xamarin-macios/tests/monotouch-test/WebKit/WKPreferencesTest.cs:19
at (wrapper managed-to-native) System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo,object,object[],System.Exception&)
at System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x0006a] in /Library/Frameworks/Xamarin.Mac.framework/Versions/Current/src/Xamarin.Mac/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:395
--- End of stack trace from previous location where exception was thrown ---
at NUnit.Framework.Internal.ExceptionHelper.Rethrow (System.Exception exception) [0x00006] in <d392db2fb3d64f4fa564a7b744fc7801>:0
at NUnit.Framework.Internal.Reflect.DynamicInvokeWithTransparentExceptions (System.Delegate delegate) [0x00013] in <d392db2fb3d64f4fa564a7b744fc7801>:0
at NUnit.Framework.Internal.ExceptionHelper.RecordException (System.Delegate parameterlessDelegate, System.String parameterName) [0x00067] in <d392db2fb3d64f4fa564a7b744fc7801>:0 >
f0c8738966