[FIR] Extract LHS receiver of assignment operator statements

#KT-53490 Fixed

compiler/testData/codegen/box/operatorConventions/assignToDotQualifiedWithSideEffect.kt

@@ -0,0 +1,64 @@
+// EXPECTED_REACHABLE_NODES: 1286
+package foo
+
+var global: String = ""
+
+class A {
+    var prop: Int = 0
+}
+
+fun bar(s: String, a: A): A {
+    global += s
+    return a
+}
+
+
+fun box(): String {
+    val a = A()
+
+    global = ""
+    bar("A", a).prop = try { global += "B"; 10 } finally {}
+    assertEquals("AB", global)
+    assertEquals(10, a.prop)
+
+    global = ""
+    bar("A", a).prop += try { global += "B"; 20 } finally {}
+    assertEquals("AB", global)
+    assertEquals(30, a.prop)
+
+    global = ""
+    bar("A", a).prop -= try { global += "B"; 20 } finally {}
+    assertEquals("AB", global)
+    assertEquals(10, a.prop)
+
+    global = ""
+    bar("A", a).prop *= try { global += "B"; 2 } finally {}
+    assertEquals("AB", global)
+    assertEquals(20, a.prop)
+
+    global = ""
+    bar("A", a).prop /= try { global += "B"; 5 } finally {}
+    assertEquals("AB", global)
+    assertEquals(4, a.prop)
+
+    global = ""
+    bar("A", a).prop %= try { global += "B"; 3 } finally {}
+    assertEquals("AB", global)
+    assertEquals(1, a.prop)
+
+    global = ""
+    (try { bar("A", a) } finally {}).prop++
+    assertEquals("A", global)
+    assertEquals(2, a.prop)
+
+    global = ""
+    ++(try { bar("A", a) } finally {}).prop
+    assertEquals("A", global)
+    assertEquals(3, a.prop)
+
+    return "OK"
+}
+
+fun assertEquals(first: Any?, second: Any?) {
+    if (first != second) throw AssertionError("$first != $second")
+}