[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/methodparameters/basicKotlinDefaultParametersOverride.kt

@@ -0,0 +1,38 @@
+// FIR_IDENTICAL
+// TARGET_BACKEND: JVM
+
+// FILE: Java1.java
+public class Java1 extends A { }
+
+// FILE: Java2.java
+public class Java2 extends A {
+    void foo(Integer a, Object b, Object c){ };
+}
+
+// FILE: 1.kt
+open class A {
+    open fun foo(a: Int = 0, b: Any? = "string", c: Nothing? = null) { }
+}
+
+class B : Java1()   //Kotlin ← Java ← Kotlin
+
+class C : Java1() { //Kotlin ← Java ← Kotlin with explicit override
+    override fun foo(a: Int, b: Any?, c: Nothing?) { }
+}
+
+class D : Java2()   //Kotlin ← Java ← Kotlin with explicit override in java
+
+class E: Java2() {  //Kotlin ← Java ← Kotlin with explicit override in java and kotlin
+    override fun foo(a: Int, b: Any?, c: Nothing?) { }
+}
+
+fun test(b: B, c: C, d: D, e: E) {
+    b.foo()
+    b.foo(1)
+    c.foo()
+    c.foo(1, "", null)
+    d.foo()
+    d.foo(1, null, null)
+    e.foo()
+    e.foo(null, null, null)
+}