fix: 🐛 Fix RT Panel hide/show and Fix looping load errors (#1877)

* fix: 🐛 Fix RT Panel hide/show

* Prevent infinite loop by persisting load errors on displaySet.

* fix: 🐛 Fix infinite error messages

* Fix unit tests.

* comment out reamining MRSTUDY line

platform/core/src/classes/metadata/StudyMetadata.js

@@ -135,6 +135,7 @@ export class StudyMetadata extends Metadata {
         study,
         sopClassUIDs
       );
+
       if (displaySet) {
         displaySet.sopClassModule = true;