fix drag polling during overlay updates

src/dpg_map/interaction.py

@@ -196,6 +196,31 @@ def handle_mouse_wheel(
     )
 
 
+def update_drag_from_button_state(
+    state: MapState,
+    *,
+    mouse_pos: tuple[float, float],
+    hit_rect: HitRect,
+    is_down: bool,
+) -> None:
+    """Poll left-button state and keep drag interaction moving."""
+
+    with state.lock:
+        active_drag = state.interaction.active_drag
+
+    if not is_down:
+        if active_drag:
+            handle_mouse_release(state)
+        return
+
+    if active_drag:
+        handle_mouse_drag(state, mouse_pos)
+        return
+
+    if hit_rect.contains(mouse_pos[0], mouse_pos[1]):
+        handle_mouse_down(state, mouse_pos, hit_rect)
+
+
 def wheel_delta_from_app_data(app_data: Any) -> float:
     """Normalize Dear PyGui mouse wheel callback data."""