fix optimistic issue

Author: christianalfoni

packages/app/src/app/overmind/namespaces/comments/actions.ts

@@ -340,6 +340,7 @@ export const addComment: AsyncAction<{
   if (isOptimistic) {
     optimisticComment = {
       ...state.comments.comments[sandboxId][OPTIMISTIC_COMMENT_ID],
+      content,
       id,
     };
     state.comments.comments[sandboxId][id] = optimisticComment;

packages/app/src/app/overmind/namespaces/editor/actions.ts

@@ -529,9 +529,6 @@ export const forkExternalSandbox: AsyncAction<{
   try {
     const forkedSandbox = await effects.api.forkSandbox(sandboxId, body);
 
-    // We currently have to delete the comments due to smooth forking. This will get better
-    // with EditorSandbox class
-    delete state.comments.comments[sandboxId];
     state.editor.sandboxes[forkedSandbox.id] = forkedSandbox;
     effects.router.updateSandboxUrl(forkedSandbox, { openInNewWindow });
   } catch (error) {