FIR2IR: support static fake overrides (functions) #KT-53441 Fixed

compiler/testData/codegen/box/fir/assertEqualsFakeOverride.kt

@@ -0,0 +1,31 @@
+// TARGET_BACKEND: JVM_IR
+// FILE: AbstractBlackBoxCodegenTest.java
+
+public abstract class AbstractBlackBoxCodegenTest extends CodegenTestCase {}
+
+// FILE: CodegenTestCase.java
+
+public abstract class CodegenTestCase extends KotlinBaseTest<CharSequence> {}
+
+// FILE: KotlinBaseTest.kt
+
+abstract class KotlinBaseTest<F : CharSequence> : KtUsefulTestCase() {}
+
+// FILE: KtUsefulTestCase.java
+
+public abstract class KtUsefulTestCase extends TestCase {}
+
+// FILE: TestCase.java
+
+public abstract class TestCase {
+    public static void assertEquals(int expected, int actual) {
+
+    }
+}
+
+// FILE: test.kt
+
+fun box(): String {
+    AbstractBlackBoxCodegenTest.assertEquals(42, 42)
+    return "OK"
+}