Right click context menu items missing.

[edzillion]

Steps to Reproduce:

1. Create empty vault.
2. Install & Enable obsidian map view
3. Create new note
4. Right click on this note

Console error:

app.js:1 Uncaught TypeError: object null is not iterable (cannot read property Symbol(Symbol.iterator))
    at MapViewPlugin.onEditorMenu (VM146 plugin:obsidian-map-view:60994:42)
    at eval (VM146 plugin:obsidian-map-view:60790:22)
    at t.tryTrigger (app.js:1:741961)
    at t.trigger (app.js:1:741894)
    at t.trigger (app.js:1:2256223)
    at t.<anonymous> (app.js:1:1674472)
    at app.js:1:239667
    at Object.next (app.js:1:239772)
    at a (app.js:1:238490)

I have fixed this already,

main.ts:859:

                const [location, name] = this.getLocationOnEditorLine(
                    editor,
                    editorLine,
                    view,
                    true,
                ) ?? [];

Just added nullish coalescer in case getLocationOnEditorLine() returns null.

I will make submit a PR with this fix now FWW.