remove the module name from test identifiers and align options with Xcode (danielpaulus#397)

The test-to-skip argument was not working, while test-to-run was just fine (they are both using XCTTestIdentifier internally).
One issue was that Xcode sets to options field to 2 and not 6 when both a class-name and a method-name are specified. Also, Xcode doesn't use the module parameter anymore.

Author: dmissmann

ios/nskeyedarchiver/objectivec_classes.go

@@ -181,19 +181,19 @@ func createTestIdentifierSet(productModuleName string, tests []string) XCTTestId
 			}
 		}
 
-		components := make([]string, 0, 3)
+		components := make([]string, 0, 2)
 
-		module := matchedGroups["module"]
+		// the `module` parameter is ingored here as it only works reliably with `testIdentifiersToRun`
+		// adding the `module` parameter to `testIdentifiersToSkip` won't skip the specified tests there
+		// this was verified with Xcode 15
+		_ = matchedGroups["module"]
 		clazz := matchedGroups["class"]
 		method := matchedGroups["method"]
 
 		options := uint64(3)
-		if len(module) > 0 {
-			clazz = fmt.Sprintf("%s.%s", productModuleName, clazz)
-		}
 		components = append(components, clazz)
 		if len(method) > 0 {
-			options = 6
+			options = 2
 			components = append(components, method)
 		}