[NI] Fix common supertype of types with error supertypes

Enable check for error supertypes during CST calculation in classic type system context.
Cyclic upper bound + known type parameters of superclasses may create non-error types
with error supertypes. Such types don't have common constructors with other normal types
and cause assertion errors during intersection.

^KT-36951 Fixed

compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirOldFrontendDiagnosticsTestGenerated.java

@@ -10109,6 +10109,11 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirOldFronte
             runTest("compiler/testData/diagnostics/tests/inference/commonSuperTypeOfErrorTypes.kt");
         }
 
+        @TestMetadata("commonSuperTypeOfTypesWithErrorSupertypes.kt")
+        public void testCommonSuperTypeOfTypesWithErrorSupertypes() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/inference/commonSuperTypeOfTypesWithErrorSupertypes.kt");
+        }
+
         @TestMetadata("compatibilityResolveWhenVariableHasComplexIntersectionType.kt")
         public void testCompatibilityResolveWhenVariableHasComplexIntersectionType() throws Exception {
             runTest("compiler/testData/diagnostics/tests/inference/compatibilityResolveWhenVariableHasComplexIntersectionType.kt");

compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirOldFrontendDiagnosticsTestWithStdlibGenerated.java

@@ -2910,6 +2910,11 @@ public class FirOldFrontendDiagnosticsTestWithStdlibGenerated extends AbstractFi
             runTest("compiler/testData/diagnostics/testsWithStdLib/inference/kt36249.kt");
         }
 
+        @TestMetadata("kt36951.kt")
+        public void testKt36951() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithStdLib/inference/kt36951.kt");
+        }
+
         @TestMetadata("kt37627.kt")
         public void testKt37627() throws Exception {
             runTest("compiler/testData/diagnostics/testsWithStdLib/inference/kt37627.kt");