[FIR TEST] Add test for unresolved reference in default argument

See KT-36905

compiler/fir/resolve/testData/resolve/problems/extensionLambdaInDefaultArgument.kt

@@ -0,0 +1,5 @@
+fun test(
+    val f: String.() -> Int = { <!UNRESOLVED_REFERENCE!>length<!> }
+): Int {
+    return "".f()
+}

compiler/fir/resolve/testData/resolve/problems/extensionLambdaInDefaultArgument.txt

@@ -0,0 +1,7 @@
+FILE: extensionLambdaInDefaultArgument.kt
+    public final fun test(f: R|kotlin/String.() -> kotlin/Int| = fun R|kotlin/String|.<anonymous>(): R|ERROR CLASS: Unresolved name: length| {
+        ^ <Unresolved name: length>#
+    }
+    ): R|kotlin/Int| {
+        ^test R|<local>/f|.R|FakeOverride<kotlin/Function1.invoke: R|kotlin/Int|>|(String())
+    }

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java

@@ -1299,6 +1299,11 @@ public class FirDiagnosticsTestGenerated extends AbstractFirDiagnosticsTest {
             runTest("compiler/fir/resolve/testData/resolve/problems/definitelyNotNullAndOriginalType.kt");
         }
 
+        @TestMetadata("extensionLambdaInDefaultArgument.kt")
+        public void testExtensionLambdaInDefaultArgument() throws Exception {
+            runTest("compiler/fir/resolve/testData/resolve/problems/extensionLambdaInDefaultArgument.kt");
+        }
+
         @TestMetadata("javaAccessorConversion.kt")
         public void testJavaAccessorConversion() throws Exception {
             runTest("compiler/fir/resolve/testData/resolve/problems/javaAccessorConversion.kt");

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java

@@ -1299,6 +1299,11 @@ public class FirDiagnosticsWithLightTreeTestGenerated extends AbstractFirDiagnos
             runTest("compiler/fir/resolve/testData/resolve/problems/definitelyNotNullAndOriginalType.kt");
         }
 
+        @TestMetadata("extensionLambdaInDefaultArgument.kt")
+        public void testExtensionLambdaInDefaultArgument() throws Exception {
+            runTest("compiler/fir/resolve/testData/resolve/problems/extensionLambdaInDefaultArgument.kt");
+        }
+
         @TestMetadata("javaAccessorConversion.kt")
         public void testJavaAccessorConversion() throws Exception {
             runTest("compiler/fir/resolve/testData/resolve/problems/javaAccessorConversion.kt");