keymap_editor: Add `alt-l` keybinding for cycling favorite models (#48390)

Kunall Banerjee created 

The `alt-tab` keybinding doesn’t work properly under the `AgentPanel`
context on Windows and certain Linux distros, so `alt-l` is provided as
an alternative for the same action.

In my testing, I could not trigger the `AcpThread > Editor` context, but
I added the keybinding there too just in case.

Closes #48347.

Release Notes:

- Added an alternate keybinding for `agent::CycleFavoriteModels` on
Linux and Windows to prevent conflict with global app switcher

Change summary

assets/keymaps/default-linux.json   | 4 ++++
assets/keymaps/default-windows.json | 4 ++++
2 files changed, 8 insertions(+)

Detailed changes

assets/keymaps/default-linux.json 🔗 

@@ -249,6 +249,8 @@
       "ctrl-i": "agent::ToggleProfileSelector",
       "ctrl-alt-/": "agent::ToggleModelSelector",
       "alt-tab": "agent::CycleFavoriteModels",
+      // `alt-l` is provided as an alternative to `alt-tab` as the latter breaks on Linux under the `AgentPanel` context
+      "alt-l": "agent::CycleFavoriteModels",
       "ctrl-shift-j": "agent::ToggleNavigationMenu",
       "ctrl-alt-i": "agent::ToggleOptionsMenu",
       "ctrl-alt-shift-n": "agent::ToggleNewThreadMenu",
@@ -316,6 +318,8 @@
       "ctrl-i": "agent::ToggleProfileSelector",
       "shift-tab": "agent::CycleModeSelector",
       "alt-tab": "agent::CycleFavoriteModels",
+      // `alt-l` is provided as an alternative to `alt-tab` as the latter breaks on Linux under the `AcpThread > Editor` context
+      "alt-l": "agent::CycleFavoriteModels",
       "ctrl-;": "agent::OpenAddContextMenu",
       "ctrl-alt-k": "agent::ToggleThinkingMode",
     },

assets/keymaps/default-windows.json 🔗 

@@ -249,6 +249,8 @@
       "shift-alt-p": "agent::ManageProfiles",
       "ctrl-i": "agent::ToggleProfileSelector",
       "alt-tab": "agent::CycleFavoriteModels",
+      // `alt-l` is provided as an alternative to `alt-tab` as the latter breaks on Windows under the `AgentPanel` context
+      "alt-l": "agent::CycleFavoriteModels",
       "shift-alt-/": "agent::ToggleModelSelector",
       "shift-alt-j": "agent::ToggleNavigationMenu",
       "shift-alt-i": "agent::ToggleOptionsMenu",
@@ -317,7 +319,9 @@
       "ctrl-shift-v": "agent::PasteRaw",
       "ctrl-i": "agent::ToggleProfileSelector",
       "shift-tab": "agent::CycleModeSelector",
+      // `alt-l` is provided as an alternative to `alt-tab` as the latter breaks on Windows under the `AcpThread > Editor` context
       "alt-tab": "agent::CycleFavoriteModels",
+      "alt-l": "agent::CycleFavoriteModels",
       "ctrl-;": "agent::OpenAddContextMenu",
       "ctrl-alt-k": "agent::ToggleThinkingMode",
     },