Add simulate_window_resize.

Fixes up tests for movement in editor/scrolling.

Co-authored-by: Antonio <antonio@zed.dev>

crates/editor2/src/git.rs

@@ -88,7 +88,7 @@ pub fn diff_hunk_to_display(hunk: DiffHunk<u32>, snapshot: &DisplaySnapshot) ->
     }
 }
 
-#[cfg(any(test, feature = "test_support"))]
+#[cfg(any(test, feature = "test-support"))]
 mod tests {
     use crate::editor_tests::init_test;
     use crate::Point;