Sidebar Always hide wont work properly

### Current Behavior

When sidebar style is "always hide" at sidebar options it is still possible to wipe sidebar to visible with mobile device.

### Expected Behavior

When the sidebar is in “always hide” mode, it should not be possible to make it visible at all.

### Steps To Reproduce

Some times it need lot of swiping and clicking but after all it will come to visible. At least this is reproducable with Fully Kiosk Browser.

### Environment

- Dashboard version: 1.29
- Node-RED version: 4.1.1
- Node.js version: dont know, using official docker container
- npm version: dont know, using official docker container
- Platform/OS: Android
- Browser: Fully Kiosk Browser

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate

No files or tests are named. First reproduce the issue on Android with Fully Kiosk Browser using the sidebar's “always hide” option, then trace the sidebar visibility behavior in the dashboard frontend. Done means repeated swiping and clicking cannot make an always-hidden sidebar visible.

Written by the indexing model from the issue text.