Cannot have an empty kebab menu per row

### Current Behavior

Work in https://github.com/flowforge/flowforge/pull/2750 highlighted the need to hide the kebab menu dots (or visibly disable the dots and action) when there are no child elements in the menu.

As a temporary workaround, an disabled entry labelled "No actions available" was added for the empty kebab menu rows

### Expected Behavior

Kebab dots should be hidden or clearly disabled when the menu has no child entries

### Steps To Reproduce

* visit device > device x > snapshots
* uncheck "Show only Snapshots from this device"
* click the kebab menu of a non owned snapshot row

### Environment

- FlowForge version: > 1.11.4 (git)
- Node.js version:
- npm version:
- Platform/OS:
- Browser:

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

I have provided an initial effort estimate