Revert "[FIR] Do not smartcast class delegation implemented properties"

This reverts commit bb6f466162.

Reverting the fix for KT-57417 as it causes failures in IntelliJ and
Space projects. May reintroduce fix after failures are investigated and
resolved.

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeOldFrontendDiagnosticsTestGenerated.java

@@ -34635,12 +34635,6 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
                     runTest("compiler/testData/diagnostics/tests/smartCasts/varnotnull/capturedInlineModifiedBefore.kt");
                 }
 
-                @Test
-                @TestMetadata("classDelegation.kt")
-                public void testClassDelegation() throws Exception {
-                    runTest("compiler/testData/diagnostics/tests/smartCasts/varnotnull/classDelegation.kt");
-                }
-
                 @Test
                 @TestMetadata("doWhileWithBreak.kt")
                 public void testDoWhileWithBreak() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiOldFrontendDiagnosticsTestGenerated.java

@@ -34761,12 +34761,6 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
                     runTest("compiler/testData/diagnostics/tests/smartCasts/varnotnull/capturedInlineModifiedBefore.kt");
                 }
 
-                @Test
-                @TestMetadata("classDelegation.kt")
-                public void testClassDelegation() throws Exception {
-                    runTest("compiler/testData/diagnostics/tests/smartCasts/varnotnull/classDelegation.kt");
-                }
-
                 @Test
                 @TestMetadata("doWhileWithBreak.kt")
                 public void testDoWhileWithBreak() throws Exception {