Elvis operator supported for all cases of find

idea/testData/intentions/loopToCallChain/firstOrNull_letOrNotNull.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+fun foo(list: List<String>) {
+    var result = ""
+    <caret>for (s in list) {
+        if (s.length > 0) {
+            result = bar(s)
+            break
+        }
+    }
+}
+
+fun bar(s: String): String = s

idea/testData/intentions/loopToCallChain/firstOrNull_letOrNotNull.kt.after

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo(list: List<String>) {
+    <caret>val result = list.firstOrNull { it.length > 0 }?.let { bar(it) } ?: ""
+}
+
+fun bar(s: String): String = s

idea/testData/intentions/loopToCallChain/firstOrNull_returnExpressionOrNotNull.kt

@@ -0,0 +1,9 @@
+// WITH_RUNTIME
+fun foo(list: List<String>): Int {
+    <caret>for (s in list) {
+        if (s.isNotEmpty()) {
+            return s.length
+        }
+    }
+    return -1
+}

idea/testData/intentions/loopToCallChain/firstOrNull_returnExpressionOrNotNull.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun foo(list: List<String>): Int {
+    <caret>return list.firstOrNull { it.isNotEmpty() }?.length ?: -1
+}