Revert "Hide the mouse when the user is typing in the editor (#25040)" (#25393)

This reverts commit a8610fbd13.

I've been seeing some reports of segmentation faults that appear to
point to this change as the culprit.

Closes #25366.

Release Notes:

- Community: Reverted #25040, so remove the corresponding entry from the
release notes.

crates/editor/src/element.rs

@@ -853,7 +853,6 @@ impl EditorElement {
         let modifiers = event.modifiers;
         let gutter_hovered = gutter_hitbox.is_hovered(window);
         editor.set_gutter_hovered(gutter_hovered, cx);
-        editor.mouse_cursor_hidden = false;
 
         // Don't trigger hover popover if mouse is hovering over context menu
         if text_hitbox.is_hovered(window) {
@@ -4969,10 +4968,9 @@ impl EditorElement {
                 bounds: layout.position_map.text_hitbox.bounds,
             }),
             |window| {
-                let editor = self.editor.read(cx);
-                let cursor_style = if editor.mouse_cursor_hidden {
-                    CursorStyle::None
-                } else if editor
+                let cursor_style = if self
+                    .editor
+                    .read(cx)
                     .hovered_link_state
                     .as_ref()
                     .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
@@ -6984,7 +6982,6 @@ impl Element for EditorElement {
                         },
                         false,
                     );
-
                     // Offset the content_bounds from the text_bounds by the gutter margin (which
                     // is roughly half a character wide) to make hit testing work more like how we want.
                     let content_origin =