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.

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -36991,12 +36991,6 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                     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 {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -36991,12 +36991,6 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                     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 {