Disable editor autoscroll on mouse clicks (#20287)

Closes #18148

Release Notes:

- Stop scrolling when clicking to the edges of the visible text area.
Use `autoscroll_on_clicks` to configure this behavior.


https://github.com/user-attachments/assets/3afd5cbb-5957-4e39-94c6-cd2e927038fd

---------

Co-authored-by: Kirill Bulatov <mail4score@gmail.com>

crates/editor/src/editor.rs

@@ -2931,7 +2931,7 @@ impl Editor {
         let start;
         let end;
         let mode;
-        let auto_scroll;
+        let mut auto_scroll;
         match click_count {
             1 => {
                 start = buffer.anchor_before(position.to_point(&display_map));
@@ -2967,6 +2967,7 @@ impl Editor {
                 auto_scroll = false;
             }
         }
+        auto_scroll &= !EditorSettings::get_global(cx).autoscroll_on_clicks;
 
         let point_to_delete: Option<usize> = {
             let selected_points: Vec<Selection<Point>> =

crates/editor/src/editor_settings.rs

@@ -18,6 +18,7 @@ pub struct EditorSettings {
     pub gutter: Gutter,
     pub scroll_beyond_last_line: ScrollBeyondLastLine,
     pub vertical_scroll_margin: f32,
+    pub autoscroll_on_clicks: bool,
     pub scroll_sensitivity: f32,
     pub relative_line_numbers: bool,
     pub seed_search_query_from_cursor: SeedQuerySetting,
@@ -222,6 +223,10 @@ pub struct EditorSettingsContent {
     ///
     /// Default: 3.
     pub vertical_scroll_margin: Option<f32>,
+    /// Whether to scroll when clicking near the edge of the visible text area.
+    ///
+    /// Default: false
+    pub autoscroll_on_clicks: Option<bool>,
     /// Scroll sensitivity multiplier. This multiplier is applied
     /// to both the horizontal and vertical delta values while scrolling.
     ///