Fixed an issue where the system would crash when loading models that met certain conditions

There was a problem where attempting to load a model with an extremely large amount of geometry on a single floor would cause the application to crash due to exceeding the browser's memory limit.
To prevent this problem from occurring, we optimized memory consumption during model loading.

Hide/Isolate can be triggered only when we first select objects

The right-click menu for objects can be triggered only when we first select objects
Right-click drag to pan will no longer show the menu

You can now select and work with multiple objects at once in the 3D viewer.

Select multiple objects with Shift + Click
- Hold the Shift key and click to add objects to your selection one after another (click again to deselect). A regular click works as before, replacing your current selection.
Review properties together
- View the properties shared across all selected objects in a single list. Properties whose values differ between objects are clearly distinguished at a glance.
Hide or isolate in bulk
- The "Hide" and "Isolate" options in the right-click menu now apply to all selected objects at once.