[java-inspections] FunctionalExpressionCanBeFolded: disable if qualifier subtype overrides default methods of function

Fixes IDEA-310524 "Method reference can be replaced with qualifier changes" suggestion changes behavior in unwanted ways. (Spring Security)

GitOrigin-RevId: f927ab534894188fa418a499c98af3a7c169b0cd

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/trivialMethodReference/afterSubtypeWithDefaultMethod.java

@@ -0,0 +1,28 @@
+// "Fix all 'Functional expression can be folded' problems in file" "true"
+import java.util.function.Predicate;
+
+class Test {
+  interface LoggingPredicate extends Predicate<String> {
+    @Override
+    default Predicate<String> negate() {
+      System.out.println("negating!");
+      return Predicate.super.negate();
+    }
+  }
+
+  interface SubPredicate extends Predicate<String> {
+  }
+
+  public static void main(String[] args) {
+    LoggingPredicate predicate = s -> !s.isEmpty();
+    test(predicate::test);
+    Predicate<String> copy = predicate;
+    test(copy::test);
+    SubPredicate subPredicate = s -> !s.isEmpty();
+    test(subPredicate);
+  }
+
+  private static void test(Predicate<String> test) {
+    System.out.println(test.negate().test("hello"));
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/trivialMethodReference/beforeSubtypeWithDefaultMethod.java

@@ -0,0 +1,28 @@
+// "Fix all 'Functional expression can be folded' problems in file" "true"
+import java.util.function.Predicate;
+
+class Test {
+  interface LoggingPredicate extends Predicate<String> {
+    @Override
+    default Predicate<String> negate() {
+      System.out.println("negating!");
+      return Predicate.super.negate();
+    }
+  }
+
+  interface SubPredicate extends Predicate<String> {
+  }
+
+  public static void main(String[] args) {
+    LoggingPredicate predicate = s -> !s.isEmpty();
+    test(predicate::test);
+    Predicate<String> copy = predicate;
+    test(copy::test);
+    SubPredicate subPredicate = s -> !s.isEmpty();
+    test(subPredicate::<caret>test);
+  }
+
+  private static void test(Predicate<String> test) {
+    System.out.println(test.negate().test("hello"));
+  }
+}