[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/labels/labeledFunctionLiteral.fir.kt

@@ -0,0 +1,17 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+
+val funLit = lambda@ fun String.() {
+    val d1 = this@lambda
+}
+
+fun test() {
+    val funLit = lambda@ fun String.(): String {
+        return this@lambda
+    }
+}
+
+fun lambda() {
+    val funLit = lambda@ fun String.(): String {
+        return this@lambda
+    }
+}