Prohibiting incorrect transformations of loops with expression-embedded break or continue + allowed "?: continue" pattern for mapNotNull

idea/testData/intentions/loopToCallChain/mapNotNull_nestedLoopElvisContinue.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+// INTENTION_TEXT: "Replace with 'flatMap{}.mapNotNull{}.mapTo(){}'"
+fun foo(list: List<String>, target: MutableList<String>) {
+    <caret>for (s in list) {
+        for (i in s.indices) {
+            val v = bar(i) ?: continue
+            target.add(v.substring(1))
+        }
+    }
+}
+
+fun bar(p: Int): String? = null