Use get_cursor_shape for identifying the cursor shape in AnimationTimelineEdit

get_cursor_shape() is used in cases where a Control displays different cursors in different areas.
There is no need to set the default cursor shape on every mouse move event.

(cherry picked from commit 4a8a6f892f6d4579c624faf2f35a6a9883e9cf44)

editor/animation_track_editor.cpp

@@ -1724,13 +1724,6 @@ void AnimationTimelineEdit::_gui_input(const Ref<InputEvent> &p_event) {
 	Ref<InputEventMouseMotion> mm = p_event;
 
 	if (mm.is_valid()) {
-		if (hsize_rect.has_point(mm->get_position())) {
-			// Change the cursor to indicate that the track name column's width can be adjusted
-			set_default_cursor_shape(Control::CURSOR_HSIZE);
-		} else {
-			set_default_cursor_shape(Control::CURSOR_ARROW);
-		}
-
 		if (dragging_hsize) {
 			int ofs = mm->get_position().x - dragging_hsize_from;
 			name_limit = dragging_hsize_at + ofs;
@@ -1752,6 +1745,15 @@ void AnimationTimelineEdit::_gui_input(const Ref<InputEvent> &p_event) {
 	}
 }
 
+Control::CursorShape AnimationTimelineEdit::get_cursor_shape(const Point2 &p_pos) const {
+	if (dragging_hsize || hsize_rect.has_point(p_pos)) {
+		// Indicate that the track name column's width can be adjusted
+		return Control::CURSOR_HSIZE;
+	} else {
+		return get_default_cursor_shape();
+	}
+}
+
 void AnimationTimelineEdit::set_use_fps(bool p_use_fps) {
 	use_fps = p_use_fps;
 	update_values();

editor/animation_track_editor.h

@@ -119,6 +119,8 @@ public:
 
 	void set_hscroll(HScrollBar *p_hscroll);
 
+	virtual CursorShape get_cursor_shape(const Point2 &p_pos) const;
+
 	AnimationTimelineEdit();
 };