Move divider left/right don't work with custom shortcut

Dupe Check

• I have searched Warp bugs and there are no duplicates

Describe the bug

I have all four "move divider" commands reconfigured to use Shift/Option modifiers.

This works just fine with the "up" and "down" move, but "left" and "right" simply do nothing at all in this setup.

To reproduce

Divide a window into four panes. Attempt to move the dividers in all four directions using the standard shortcuts. It should work correctly. (Incidentally, it may render the error in #1281 -- it did for me.)

Now set up keyboard shortcuts as shown in the screenshot above. Try to hove the dividers again. I expect you will the same result I had: up/down work, left/right fail.

Expected behavior

I expect all four move directions to work correctly, independent of the keyboard binding.

Screenshots

No response

Operating system

MacOS

Operating system and version

Sonoma 14.5

Shell Version

No response

Current Warp version

v0.2024.05.28.08.02.stable_00

Regression

No, this bug or issue has existed throughout my experience using Warp

Recent working Warp date

No response

Additional context

No response

Does this block you from using Warp daily?

No

Is this a Warp specific issue? (i.e. does it happen in Terminal, iTerm, Kitty, etc.)

Yes, this I confirmed this only happens in Warp, not other terminals.

Warp Internal (ignore): linear-label:b9d78064-c89e-4973-b153-5178a31ee54e

None

The issue names no source files, tests, or entry points. Start by locating the divider-movement commands and keyboard shortcut handling, then reproduce the four-pane case with the custom bindings; done means left and right work with the configured shortcuts as up and down do.