Sidebar inconsistencies with collapse behavior

[codealchemy]

Describe the bug

Side navigation with multiple groups (such as static links in addition to configured models) can move around depending on the state of a given dropdown within the side navigation.

Example using the dummy app from /spec

Reproduction steps

Start demo app, visit the dashboard.

Expected behavior

Side navigation width and group stacking to be static / consistent.

Additional context

• rails version: 7.0.x
• rails_admin version: master branch
• rails_admin npm package version: master branch
• full stack trace (if there's an exception) N/A

Add any other context about the problem here.

Collapsable sidebar introduced in e8cb8ed

[mshibuya]

Sorry about this, it was broken by ef76fce and fixed in the master now.

[codealchemy]

Looks good, thanks!