Cannot initialize documentation tool properly

[HeikoBecker]

As reported by @alexanderpann, the documentation tool fails to initialize with the following exception in master:

java.lang.NullPointerException: Cannot invoke "com.intellij.openapi.wm.ToolWindow.isVisible()" because the return value of "jetbrains.mps.ide.tools.BaseTool.getToolWindow()" is null
	at jetbrains.mps.ide.tools.BaseTool.toolIsOpened(BaseTool.java:101)
	at com.mbeddr.doc.aspect.ui.plugin.DocumentationHandler.lambda$showDoc$0(DocumentationHandler.java:60)
	at jetbrains.mps.smodel.WorkbenchModelAccess.runReadAction(WorkbenchModelAccess.java:80)
	at jetbrains.mps.smodel.ModelAccessBase.runReadAction(ModelAccessBase.java:56)
	at com.mbeddr.doc.aspect.ui.plugin.DocumentationHandler.showDoc(DocumentationHandler.java:38)
	at com.mbeddr.doc.aspect.ui.plugin.DocumentationProjectPlugin_ProjectPluginPart$1.selectionChangedTo(DocumentationProjectPlugin_ProjectPluginPart.java:25)
	at jetbrains.mps.nodeEditor.selection.SingularSelectionListenerAdapter.selectionChanged(SingularSelectionListenerAdapter.java:33)
	at jetbrains.mps.nodeEditor.selection.SelectionManagerImpl.doChangeSelection(SelectionManagerImpl.java:219)
	at jetbrains.mps.nodeEditor.selection.SelectionManagerImpl.setSelectionInfoStack(SelectionManagerImpl.java:176)
	at jetbrains.mps.nodeEditor.Memento.restore(Memento.java:185)

To reproduce, open mbeddr.doc + another project and start typing in a sandbox. The error message should appear immediately.

[alexanderpann]

Confirmed to be fixed by using MPS 2022.2.1 instead of MSP 2022.2.
Seems to be coming back with MPS 2022.3, maybe the bugfix is missing there.