Quick-Fixes: Support "Change function return type" quick-fix for non-local returns

#KT-6910 Fixed

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/afterNonLocalReturn.kt

@@ -0,0 +1,6 @@
+// "Change 'foo' function return type to 'Int'" "true"
+fun foo(n: Int): Int {
+    n.let {
+        return 1
+    }
+}

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/afterNonLocalReturnWithLabel.kt

@@ -0,0 +1,6 @@
+// "Change 'foo' function return type to 'Int'" "true"
+fun foo(n: Int): Int {
+    n.let {
+        return@foo 1
+    }
+}

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/beforeNonLocalReturn.kt

@@ -0,0 +1,6 @@
+// "Change 'foo' function return type to 'Int'" "true"
+fun foo(n: Int): Boolean {
+    n.let {
+        return <caret>1
+    }
+}

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/beforeNonLocalReturnWithLabel.kt

@@ -0,0 +1,6 @@
+// "Change 'foo' function return type to 'Int'" "true"
+fun foo(n: Int): Boolean {
+    n.let {
+        return@foo <caret>1
+    }
+}