Action release handlers (#8782)

This PR adds support for handling action releases — events that
are fired when the user releases all the modifier keys that were part of
an action-triggering shortcut.

If the user holds modifiers and invokes several actions sequentially via
shortcuts (same or different), only the last action is "released" when
its modifier keys released.

~The following methods were added to `Div`:~
- ~`capture_action_release()`~
- ~`on_action_release()`~
- ~`on_boxed_action_release()`~

~They work similarly to `capture_action()`, `on_action()` and
`on_boxed_action()`.~

See the implementation details in [this
comment](https://github.com/zed-industries/zed/pull/8782#issuecomment-2009154646).

Release Notes:

- Added a fast-switch mode to the file finder: hit `p` or `shift-p`
while holding down `cmd` to select a file immediately. (#8258).

Related Issues:

- Implements #8757 
- Implements #8258
- Part of #7653 

Co-authored-by: @ConradIrwin

assets/keymaps/default-linux.json

@@ -15,6 +15,7 @@
       "shift-f10": "menu::ShowContextMenu",
       "ctrl-enter": "menu::SecondaryConfirm",
       "escape": "menu::Cancel",
+      "ctrl-escape": "menu::Cancel",
       "ctrl-c": "menu::Cancel",
       "shift-enter": "menu::UseSelectedQuery",
       "ctrl-shift-w": "workspace::CloseWindow",
@@ -558,6 +559,10 @@
       "escape": "chat_panel::CloseReplyPreview"
     }
   },
+  {
+    "context": "FileFinder",
+    "bindings": { "ctrl-shift-p": "menu::SelectPrev" }
+  },
   {
     "context": "Terminal",
     "bindings": {