[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/gettersetter/substitutionOverrideForGetterSetter.kt

@@ -0,0 +1,50 @@
+// TARGET_BACKEND: JVM
+
+// FILE: Java1.java
+public class Java1<T> {
+    private T a;
+    public T getA() {
+        return a;
+    }
+    public void setA(T t) {
+        a = t;
+    }
+
+    private T b;
+    public T isB() {
+        return b;
+    }
+    public void setB(T t) {
+        b = t;
+    }
+
+    private T c;
+    public T getC() {
+        return c;
+    }
+
+    private T d;
+    public void setD(T t) {
+        d = t;
+    }
+}
+
+// FILE: test.kt
+class A : Java1<Int>()
+
+class B : Java1<Boolean>()
+
+fun test(a: A, b: B){
+    a.a
+    a.a = null
+    a.isB
+    a.isB = null
+    a.c
+    a.setD(null)
+    b.a
+    b.a = true
+    b.isB
+    b.isB = true
+    b.c
+    b.setD(true)
+}