Do not rely on descriptors in KParameterImpl.equals/hashCode

For the same reason as in the previous commit: descriptors are cached
via weak references in moduleByClassLoader.kt and can be
garbage-collected at any point. So different instances of KParameterImpl
representing the same parameter may store different instances of
descriptors.

compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -25387,6 +25387,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
                 runTest("compiler/testData/codegen/box/reflection/methodsFromAny/parametersEqualsHashCode.kt");
             }
 
+            @TestMetadata("parametersEqualsWithClearCaches.kt")
+            public void testParametersEqualsWithClearCaches() throws Exception {
+                runTest("compiler/testData/codegen/box/reflection/methodsFromAny/parametersEqualsWithClearCaches.kt");
+            }
+
             @TestMetadata("parametersToString.kt")
             public void testParametersToString() throws Exception {
                 runTest("compiler/testData/codegen/box/reflection/methodsFromAny/parametersToString.kt");