Do not show the transform if there is no current selection (#615)

* Do not show the transform if there is no current selection

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: martinRenou

packages/base/src/3dview/mainview.tsx

@@ -1524,8 +1524,9 @@ export class MainView extends React.Component<IProps, IStates> {
         this.setState(
           old => ({ ...old, transform: transformEnabled }),
           () => {
-            this._transformControls.visible = transformEnabled;
-            this._transformControls.enabled = transformEnabled;
+            this._updateTransformControls(
+              Object.keys(this._currentSelection || {})
+            );
           }
         );
       }