[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/generics/genericWithBoundsOnKJJ.kt

@@ -0,0 +1,72 @@
+// TARGET_BACKEND: JVM
+
+// FILE: Java1.java
+public class Java1<T extends Number> {
+    public void foo(T t) { }
+    public T bar() {
+        return null;
+    }
+}
+
+// FILE: Java2.java
+public class Java2 extends Java1 { }
+
+// FILE: Java3.java
+public class Java3 extends Java1<Double>  { }
+
+// FILE: Java4.java
+public class Java4<T> extends Java1<Number> {
+    public void foo(T t) { }
+}
+
+// FILE: Java6.java
+public class Java6 extends KotlinClass2 {
+    @Override
+    public void foo(Number t) {}
+    @Override
+    public Number bar() {
+        return null;
+    }
+}
+
+// FILE: 1.kt
+class A : Java2()
+
+class B : Java3()
+
+class C : Java4<Any>()
+
+class D : Java2() {
+    override fun foo(t: Number?) { }
+}
+
+class E : Java3() {
+    override fun foo(t: Double?) { }
+}
+
+class F : Java4<Any>() {
+    override fun foo(t: Any?) { }
+}
+
+fun test(a: A, b: B, c : C, d: D, e: E, f: F) {
+    a.foo(1)
+    a.foo(1.1)
+    a.foo(null)
+    a.bar()
+    b.foo(1.2)
+    b.foo(null)
+    b.bar()
+    c.foo(null)
+    c.foo("")
+    c.foo(1)
+    c.bar()
+    d.foo(null)
+    d.foo(1)
+    d.bar()
+    e.foo(1.1)
+    e.foo(null)
+    e.bar()
+    f.foo(2)
+    f.foo("")
+    f.bar()
+}