[FIR] Create snapshot of tower data context for postponed callable referneces

This fixes an issue if type of some implicit receiver was changed because
  of changed smartcast in outer scope

^KT-51228 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerFirTestdataTestGenerated.java

@@ -3741,6 +3741,12 @@ public class DiagnosisCompilerFirTestdataTestGenerated extends AbstractDiagnosis
                 runTest("compiler/fir/analysis-tests/testData/resolve/smartcasts/smartcastInByClause.kt");
             }
 
+            @Test
+            @TestMetadata("smartcastOnImplicitReceiverOfCallableReference.kt")
+            public void testSmartcastOnImplicitReceiverOfCallableReference() throws Exception {
+                runTest("compiler/fir/analysis-tests/testData/resolve/smartcasts/smartcastOnImplicitReceiverOfCallableReference.kt");
+            }
+
             @Test
             @TestMetadata("smartcastToNothing.kt")
             public void testSmartcastToNothing() throws Exception {