[lldb] Adjust test for swifinterface printing change.

Matching swiftlang/swift#37879.

(cherry picked from commit ce6ad64)

Author: varungandhi-apple

lldb/test/API/lang/swift/printdecl/TestSwiftTypeLookup.py

@@ -43,7 +43,7 @@ def test_swift_type_lookup(self):
             "type lookup String",
             substrs=[
                 'struct String {',
-                'extension String : '])
+                'extension Swift.String : '])
         self.expect(
             "type lookup Cla1",
             substrs=[
@@ -88,7 +88,7 @@ def test_swift_type_lookup(self):
             'type lookup _TtSi',
             substrs=[
                 'struct Int',
-                'extension Int'])
+                'extension Swift.Int'])
 
         # check that we can look for generic things
         self.expect('type lookup Generic', substrs=['class Generic', 'foo'])