jetbrains: Unmap cmd-k in Jetbrains keymap (#35443)

This only works after a delay in most situations because of the all
chorded `cmd-k` mappings in the so disable them for now.

Reported by @jer-k:
https://x.com/J_Kreutzbender/status/1951033355434336606

Release Notes:

- Undo mapping of `cmd-k` for Git Panel in default Jetbrains keymap
(thanks [@jer-k](https://github.com/jer-k))

assets/keymaps/linux/jetbrains.json

@@ -95,7 +95,7 @@
       "ctrl-shift-r": ["pane::DeploySearch", { "replace_enabled": true }],
       "alt-shift-f10": "task::Spawn",
       "ctrl-e": "file_finder::Toggle",
-      "ctrl-k": "git_panel::ToggleFocus", // bug: This should also focus commit editor
+      // "ctrl-k": "git_panel::ToggleFocus", // bug: This should also focus commit editor
       "ctrl-shift-n": "file_finder::Toggle",
       "ctrl-shift-a": "command_palette::Toggle",
       "shift shift": "command_palette::Toggle",