[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/java21/sequenceCollectionIntersectionOverrideKJJ.kt.txt

@@ -0,0 +1,36 @@
+class A : LinkedList<Int>, SequencedCollection<Int> {
+  constructor() /* primary */ {
+    super/*LinkedList*/<@FlexibleNullability Int?>()
+    /* <init>() */
+
+  }
+
+}
+
+class B : LinkedList<Int>, SequencedCollection<Int> {
+  constructor() /* primary */ {
+    super/*LinkedList*/<@FlexibleNullability Int?>()
+    /* <init>() */
+
+  }
+
+  override fun addFirst(e: Int?) {
+  }
+
+  override fun reversed(): LinkedList<Int> {
+    return CHECK_NOT_NULL<Nothing>(arg0 = null)
+  }
+
+}
+
+fun test(a: A, b: B) {
+  a.<get-size>() /*~> Unit */
+  a.remove(element = 1) /*~> Unit */
+  a.addFirst(p0 = 3)
+  a.addLast(p0 = null)
+  a.removeFirst() /*~> Unit */
+  a.removeLast() /*~> Unit */
+  a.reversed<Int>() /*~> Unit */
+  b.reversed<Int>() /*~> Unit */
+  b.addFirst(e = 1)
+}