editor: Fix broken mouse scrolling on main (#29307)

This PR is a quick follow-up to #29234 , which unfortunately broke
scrolling with the mouse in editors on main.

The linked PR introduced the possiblilty to completely disable scrolling
for editors. Unfortunately, it also disabled scrolling for editors by
default. This PR fixes this by re-enabling it by default.

This change also needs to be backported to v0.184.x. Otherwise, mouse
scrolling in the next preview release will not work!

Release Notes:

- N/A

crates/editor/src/editor.rs

@@ -1594,7 +1594,7 @@ impl Editor {
             blink_manager: blink_manager.clone(),
             show_local_selections: true,
             show_scrollbars: true,
-            disable_scrolling: true,
+            disable_scrolling: false,
             mode,
             show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
             show_gutter: mode.is_full(),