Insert key behavior: selection should automatically move cursor to the next item

[raptyk]

Describe the bug
In classic orthodox file managers, pressing the Insert key toggles the selection of the current file and automatically moves the cursor down to the next file. In Cloud Commander, the Insert key toggles the selection, but the cursor remains on the same item, which requires alternating between Insert and the Down arrow to select multiple consecutive files.

To Reproduce / Steps to reproduce the behavior:

1. Open Cloud Commander in your browser.
2. Navigate to any folder containing multiple files.
3. Focus on a file and press the Insert key.
4. See that the file is selected, but the cursor does not move to the next row.

Expected behavior
Pressing the Insert key should toggle the selection state of the current item AND automatically advance the cursor down to the next item in the list. This allows users to rapidly select consecutive files by simply pressing the Insert key repeatedly.

Screenshots
Not applicable.

Desktop (please complete the following information):

Version (cloudcmd -v): latest (Docker image)
Node Version node -v: (Inside Docker image)
OS (uname -a on Linux): Linux (Docker host)
Browser name/version: Chrome / Firefox / Edge (Any modern browser)
Used Command Line Parameters: Docker default

[coderaiser]

We have this in documentation:

select current file (and move to next)

So it looks like a bug. Up for a PR?