EA-219152 (partially): Support KClass 'unboxing' in debugger

KClass can be 'unboxed' to a plain Java class. Debugger should be aware of this.
Unfortunately, this commit is not enough to fully support this scenario, as it's impossible to invoke KClass methods/extension on java.lang.Class instance. There should be an additional diagnostic that will forbid such calls.

idea/jvm-debugger/jvm-debugger-evaluation/src/org/jetbrains/kotlin/idea/debugger/evaluate/variables/EvaluatorValueConverter.kt

@@ -50,6 +50,11 @@ class EvaluatorValueConverter(val context: ExecutionContext) {
             return true
         }
 
+        if (requestedType == AsmTypes.K_CLASS_TYPE && actualType == AsmTypes.JAVA_CLASS_TYPE) {
+            // KClass can be represented as a Java class for simpler cases. See BoxingInterpreter.isJavaLangClassBoxing().
+            return true
+        }
+
         val unwrappedActualType = unwrap(actualType)
         val unwrappedRequestedType = unwrap(requestedType)
         return unwrappedActualType == unwrappedRequestedType