Avoid notifying editor when wrap width changes

Wrap width is already assigned from within draw. It can be called multiple
times as taffy iteratively computes the layout.

Co-authored-by: Nathan <nathan@zed.dev>

crates/editor2/src/editor.rs

@@ -8300,7 +8300,9 @@ impl Editor {
         self.style.as_ref()
     }
 
-    pub fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut AppContext) -> bool {
+    // Called by the element. This method is not designed to be called outside of the editor
+    // element's layout code because it does not notify when rewrapping is computed synchronously.
+    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut AppContext) -> bool {
         self.display_map
             .update(cx, |map, cx| map.set_wrap_width(width, cx))
     }