FIR: postpone callable reference candidate in default argument case

#KT-53019 Fixed

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java

@@ -17721,6 +17721,18 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/fir/callableReferenceToStaticFunction.kt");
         }
 
+        @Test
+        @TestMetadata("cannotCastToFunction.kt")
+        public void testCannotCastToFunction() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/cannotCastToFunction.kt");
+        }
+
+        @Test
+        @TestMetadata("cannotCastToFunctionInIf.kt")
+        public void testCannotCastToFunctionInIf() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/cannotCastToFunctionInIf.kt");
+        }
+
         @Test
         @TestMetadata("ClassBuilder.kt")
         public void testClassBuilder() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/ir/Fir2IrTextTestGenerated.java

@@ -2494,6 +2494,12 @@ public class Fir2IrTextTestGenerated extends AbstractFir2IrTextTest {
             runTest("compiler/testData/ir/irText/firProblems/candidateSymbol.kt");
         }
 
+        @Test
+        @TestMetadata("cannotCastToFunction.kt")
+        public void testCannotCastToFunction() throws Exception {
+            runTest("compiler/testData/ir/irText/firProblems/cannotCastToFunction.kt");
+        }
+
         @Test
         @TestMetadata("ClashResolutionDescriptor.kt")
         public void testClashResolutionDescriptor() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/ir/LightTreeFir2IrTextTestGenerated.java

@@ -2494,6 +2494,12 @@ public class LightTreeFir2IrTextTestGenerated extends AbstractLightTreeFir2IrTex
             runTest("compiler/testData/ir/irText/firProblems/candidateSymbol.kt");
         }
 
+        @Test
+        @TestMetadata("cannotCastToFunction.kt")
+        public void testCannotCastToFunction() throws Exception {
+            runTest("compiler/testData/ir/irText/firProblems/cannotCastToFunction.kt");
+        }
+
         @Test
         @TestMetadata("ClashResolutionDescriptor.kt")
         public void testClashResolutionDescriptor() throws Exception {

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirCallResolver.kt

@@ -456,6 +456,19 @@ class FirCallResolver(
         }
 
         val chosenCandidate = reducedCandidates.single()
+        if (!resolvedCallableReferenceAtom.hasBeenPostponed &&
+            expectedType is ConeTypeVariableType &&
+            chosenCandidate.symbol.fir.let { func ->
+                func is FirSimpleFunction && func.valueParameters.any { param ->
+                    param.defaultValue != null
+                }
+            }
+        ) {
+            resolvedCallableReferenceAtom.hasBeenPostponed = true
+            return applicability to true
+        }
+
+
         constraintSystemBuilder.runTransaction {
             chosenCandidate.outerConstraintBuilderEffect!!(this)
             true