Web IDE 'File -> Open Recent' menu item should show a chevron/other indication that it's a sub-menu

[0xdevalias]

Describe the bug

Just had a chance to quickly test this now that #79 has landed.

..snip..

If I do reload/navigate away, when I come back, I can attempt to restore from the 'File' -> 'Open Recent' menu:

• It would be good if 'Open Recent' showed a chevron (>) or similar to make it more obvious that it's a sub-menu

Originally posted by @0xdevalias in #78 (comment)

Expected Behaviour

As above.

Code

N/A

Logs

N/A

See Also

• Web IDE 'File -> Save'/etc menu items suggest the wrong keybindings on macOS #90
• Web IDE 'File -> Open Recent' doesn't actually seem to restore the chosen item #92