FIR DFA: drop data flow edges from postponed lambdas in return values

This is a temporary hack to avoid compiler crashes in some code that
uses builder inference, conditional early returns from lambdas, and
expected types in a certain way. It is not correct - dropping data flow
edges never is - but it is much easier to implement for now than a
proper fix.

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

@@ -1219,6 +1219,12 @@ public class DiagnosisCompilerFirTestdataTestGenerated extends AbstractDiagnosis
                 runTest("compiler/fir/analysis-tests/testData/resolve/cfg/postponedLambdaInConstructor.kt");
             }
 
+            @Test
+            @TestMetadata("postponedLambdaInReturn.kt")
+            public void testPostponedLambdaInReturn() throws Exception {
+                runTest("compiler/fir/analysis-tests/testData/resolve/cfg/postponedLambdaInReturn.kt");
+            }
+
             @Test
             @TestMetadata("postponedLambdas.kt")
             public void testPostponedLambdas() throws Exception {