Display case-sensitive keybindings for vim commands (#24322)

This Pull Request tackles the issue outline in #14287 by changing the
way `KeyBinding`s for vim mode are displayed in the command palette.
It's worth pointing out that this whole thing was pretty much
implemented by Conrad Irwin during a pairing session, I just tried to
clean up some other changes introduced for a different issue, while
improving some comments.

Here's a quick list of the changes introduced:

- Update `KeyBinding` with a new `vim_mode` field to determine whether
the keybinding should be displayed in vim mode.
- Update the way `KeyBinding` is rendered, so as to detect if the
keybinding is for vim mode, if it is, only display keys in uppercase if
they require the shift key.
- Introduce a new global state – `VimStyle(bool)` - use to determine
whether `vim_mode` should be enabled or disabled when creating a new
`KeyBinding` struct. This global state is automatically set by the `vim`
crate whenever vim mode is enabled or disabled.
- Since the app's context is now required when building a `KeyBinding` ,
update a lot of callers to correctly pass this context.

And before and after screenshots, for comparison:

| before | after |
|--------|-------|
| <img width="1050" alt="SCR-20250205-tyeq"
src="https://github.com/user-attachments/assets/e577206d-2a3d-4e06-a96f-a98899cc15c0"
/> | <img width="1050" alt="SCR-20250205-tylh"
src="https://github.com/user-attachments/assets/ebbf70a9-e838-4d32-aee5-0ffde94d65fb"
/> |

Closes #14287 

Release Notes:

- Fix rendering of vim commands to preserve case sensitivity

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/vim/src/mode_indicator.rs

@@ -1,5 +1,5 @@
 use gpui::{div, Context, Element, Entity, Render, Subscription, WeakEntity, Window};
-use itertools::Itertools;
+use ui::text_for_keystrokes;
 use workspace::{item::ItemHandle, ui::prelude::*, StatusItemView};
 
 use crate::{Vim, VimEvent, VimGlobals};
@@ -15,7 +15,7 @@ impl ModeIndicator {
     /// Construct a new mode indicator in this window.
     pub fn new(window: &mut Window, cx: &mut Context<Self>) -> Self {
         cx.observe_pending_input(window, |this: &mut Self, window, cx| {
-            this.update_pending_keys(window);
+            this.update_pending_keys(window, cx);
             cx.notify();
         })
         .detach();
@@ -50,13 +50,10 @@ impl ModeIndicator {
         }
     }
 
-    fn update_pending_keys(&mut self, window: &mut Window) {
-        self.pending_keys = window.pending_input_keystrokes().map(|keystrokes| {
-            keystrokes
-                .iter()
-                .map(|keystroke| format!("{}", keystroke))
-                .join(" ")
-        });
+    fn update_pending_keys(&mut self, window: &mut Window, cx: &App) {
+        self.pending_keys = window
+            .pending_input_keystrokes()
+            .map(|keystrokes| text_for_keystrokes(keystrokes, cx));
     }
 
     fn vim(&self) -> Option<Entity<Vim>> {