Fix UL classes descriptors leaks

UL classes built upon descriptors and UL support classes are saving a descriptors.
This could lead to descriptors leakage so we have to eliminate any fields with descriptor references.

Fixed #KT-34337

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/IDELightClassGenerationSupport.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.idea.caches.resolve
@@ -65,9 +54,9 @@ class IDELightClassGenerationSupport(private val project: Project) : LightClassG
         override val isReleasedCoroutine
             get() = module?.languageVersionSettings?.supportsFeature(LanguageFeature.ReleaseCoroutines) ?: true
 
-        override val moduleDescriptor by lazyPub {
-            element.getResolutionFacade().moduleDescriptor
-        }
+        private val resolutionFacade get() = element.getResolutionFacade()
+
+        override val moduleDescriptor get() = resolutionFacade.moduleDescriptor
 
         override val moduleName: String by lazyPub {
             JvmCodegenUtil.getModuleName(moduleDescriptor)
@@ -102,9 +91,8 @@ class IDELightClassGenerationSupport(private val project: Project) : LightClassG
             return null
         }
 
-        override val deprecationResolver: DeprecationResolver by lazyPub {
-            element.getResolutionFacade().getFrontendService(DeprecationResolver::class.java)
-        }
+        override val deprecationResolver: DeprecationResolver get() = resolutionFacade.getFrontendService(DeprecationResolver::class.java)
+
 
         override val typeMapper: KotlinTypeMapper by lazyPub {
             KotlinTypeMapper(