Augmented list assignment inspection: add "replace with ordinary" fix

Relates to KT-20626

idea/testData/quickfix/suspiciousCollectionReassignment/replaceWithOrdinaryAssignment/simple.kt

@@ -0,0 +1,10 @@
+// "Replace with ordinary assignment" "true"
+// TOOL: org.jetbrains.kotlin.idea.inspections.SuspiciousCollectionReassignmentInspection
+// ACTION: Replace overloaded operator with function call
+// WITH_RUNTIME
+fun test(otherList: List<Int>, flag: Boolean) {
+    var list = otherList
+    if (flag) {
+        list <caret>+= 4
+    }
+}