Hide the toolbar if active view is not MarkdownView

[zsviczian]

See this issue: zsviczian/obsidian-excalidraw-plugin#798

I recommend adding an app.workspace.off("active-leaf-change",show_hide_toolbar); and checking if activeLeaf.view is a MarkdownView

[brimwats]

worth noting that this only happens with "always show toolbar". Perhaps an excalidraw compatibility mode toggle? (I feel silly that it's been months and I didn't know there were undo/erase buttons!