Preserve selection direction when running an editor: open selections in multibuffer (#31399)

Release Notes:

- Preserve selection direction when running an `editor: open selections
in multibuffer`

crates/editor/src/editor.rs

@@ -17509,9 +17509,16 @@ impl Editor {
             .selections
             .disjoint_anchors()
             .iter()
-            .map(|range| Location {
-                buffer: buffer.clone(),
-                range: range.start.text_anchor..range.end.text_anchor,
+            .map(|selection| {
+                let range = if selection.reversed {
+                    selection.end.text_anchor..selection.start.text_anchor
+                } else {
+                    selection.start.text_anchor..selection.end.text_anchor
+                };
+                Location {
+                    buffer: buffer.clone(),
+                    range,
+                }
             })
             .collect::<Vec<_>>();