refactor: reduce timeline rebuilds (#19704)

* reduce timeline rebuilds

* feat: adds bottom sheet map and actions (#19692)

* adds bottom sheet map and actions

* PR feedbacks

* only reload the asset viewer if asset is changed

* styling tweak

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

* rename singleton and remove event prefix

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/widgets/photo_view/src/core/photo_view_core.dart

@@ -416,7 +416,7 @@ class PhotoViewCoreState extends State<PhotoViewCore>
                 ? (details) => widget.onDragStart!(
                       context,
                       details,
-                      widget.controller.value,
+                      widget.controller,
                       widget.scaleStateController,
                     )
                 : null,