[Test] KT-61360: add tests for the IrFakeOverrideBuilder

Add tests for fake overrides with focus on java interoperability

Co-authored-by: Aleksandra Arsenteva <aleksandra.arsenteva@jetbrains.com>

compiler/testData/ir/irText/fakeOverrides/javastatic/intersectionOverrideOnStaticKJK.kt

@@ -0,0 +1,36 @@
+// FIR_IDENTICAL
+// TARGET_BACKEND: JVM
+
+// FILE: Java1.java
+public class Java1 {
+    public static int a = 2;
+    public static void foo(Object t) { }
+    public static Object bar() {
+        return null;
+    }
+}
+// FILE: test.kt
+
+abstract class A : Java1(),  KotlinInterface
+
+class B(override val a: Int) : Java1(), KotlinInterface {
+    override fun foo(t: Int) { }
+    override fun bar(): Int {
+        return 1
+    }
+}
+
+interface KotlinInterface {
+    val a : Int
+    fun foo(t: Int)
+    fun bar(): Int
+}
+
+fun test(a: A, b: B){
+    a.a
+    a.foo(1)
+    a.bar()
+    b.a
+    b.foo(1)
+    b.bar()
+}