docs: Add docs for hover_popover_delay and update hover delay (#30620)

- Add docs for `hover_popover_delay`.
- Set `hover_popover_delay` to `300` from `350` which matches [VSCode's
hover
delay](ed48873ba2/src/vs/editor/common/config/editorOptions.ts (L2219)).

Release Notes:

- Added `hover_popover_delay` to settings which determines time to wait
in milliseconds before showing the informational hover box.

assets/settings/default.json

@@ -113,8 +113,8 @@
   // Whether to show the informational hover box when moving the mouse
   // over symbols in the editor.
   "hover_popover_enabled": true,
-  // Time to wait before showing the informational hover box
-  "hover_popover_delay": 350,
+  // Time to wait in milliseconds before showing the informational hover box.
+  "hover_popover_delay": 300,
   // Whether to confirm before quitting Zed.
   "confirm_quit": false,
   // Whether to restore last closed project when fresh Zed instance is opened.

crates/editor/src/editor_settings.rs

@@ -369,9 +369,9 @@ pub struct EditorSettingsContent {
     ///
     /// Default: true
     pub hover_popover_enabled: Option<bool>,
-    /// Time to wait before showing the informational hover box
+    /// Time to wait in milliseconds before showing the informational hover box.
     ///
-    /// Default: 350
+    /// Default: 300
     pub hover_popover_delay: Option<u64>,
     /// Toolbar related settings
     pub toolbar: Option<ToolbarContent>,

docs/src/configuring-zed.md

@@ -1741,6 +1741,16 @@ Example:
 
 `boolean` values
 
+## Hover Popover Delay
+
+- Description: Time to wait in milliseconds before showing the informational hover box.
+- Setting: `hover_popover_delay`
+- Default: `300`
+
+**Options**
+
+`integer` values representing milliseconds
+
 ## Icon Theme
 
 - Description: The icon theme setting can be specified in two forms - either as the name of an icon theme or as an object containing the `mode`, `dark`, and `light` icon themes for files/folders inside Zed.