fix(runtime): Do not hide unavailable global symbols

In Xcode 11 beta `UIDocumentInteractionControllerDelegate` has been
declared as unavailable before SDK 13.0 but it actually exists since 3.2.

see https://developer.apple.com/documentation/uikit/uidocumentinteractioncontrollerdelegate

Author: mbektchiev

src/NativeScript/GlobalObject.mm

@@ -328,7 +328,7 @@ static void runLoopBeforeWaitingPerformWork(CFRunLoopObserverRef observer, CFRun
     if (symbolName == nullptr)
         return false;
 
-    const Meta* symbolMeta = Metadata::MetaFile::instance()->globalTable()->findMeta(symbolName);
+    const Meta* symbolMeta = Metadata::MetaFile::instance()->globalTable()->findMeta(symbolName, false);
     if (symbolMeta == nullptr)
         return false;