Swift: Restore original Type.toString() behaviour.

Author: geoffw0

swift/ql/lib/codeql/swift/elements/type/Type.qll

@@ -6,7 +6,7 @@ private import codeql.swift.generated.type.Type
  * This QL class is the root of the Swift type hierarchy.
  */
 class Type extends Generated::Type {
-  override string toString() { result = this.getName() }
+  override string toString() { result = this.getFullName() }
 
   /**
    * Gets the name of this type.