keyboard shortcut accidentally triggers when using Cmd-L to switch to location bar

### Site

phanpy.social

### Version

2025.04.28.5849b4d

### Instance

techpolicy.social

### Browser

- Firefox 134 on macOS

### Bug description

I frequently accidentally "like" a toot as I'm leaving phanpy, because I use Command-L to switch to the location bar on my browser to type in a different URL, and that is triggering the 'L' command to send a like.

### To reproduce

1. Interact with any toot (like opening a CW)
2. Hit Command-L

### Expected behavior

Key chords that execute browser commands shouldn't also trigger the keyboard shortcuts. (Maybe actions that remove keyboard focus shouldn't trigger?)

### Other

Maybe this is a browser bug? (That is, if it's impossible for the application to distinguish these cases.) If so, let me know and I'll help file the issue there instead.

Reproduce the shortcut in Firefox 134 on macOS using the steps in the report, then locate the application's keyboard-shortcut handling entry point; no file or test is named in the issue. Done means Command-L switches to the browser location bar without triggering the application's like shortcut, while ordinary shortcut use still works.

Written by the indexing model from the issue text.