[Accordion] Container with "Please drag Accordion item components here" in edit mode is not hidden

## Bug Report

**Current Behavior**
In edit mode when I switch between items of accordion (containers) the content of those items dissapear correctly but the containers with parsys are still displayed and because of that it look's like all paryses are in one container and it's problematic to add new items inside specific item of accordion, also when last item of accordion is collapsed, the content of this item is over components below.

**Expected behavior/code**
All content and containers related to specific accordion item are not displayed when are collapsed.

**Environment**
- AEM Cloud Lastest Version
- Java(TM) SE Runtime Environment(build 11.0.12+8-LTS-237)

**Additional context / Screenshots**

The issue identifies the Accordion component and its edit-mode collapse behavior, but names no files or tests. Start by reproducing the problem in AEM edit mode while switching and collapsing items; done means collapsed items hide both their content and parsys containers without overlapping components below.

Written by the indexing model from the issue text.