Problematic completion commands

Vertico is robust in most scenarios. However some completion commands make certain assumptions about the completion styles and the completion UI. Some of these assumptions may not hold in Vertico or other UIs and require minor workarounds.

• org-refile
• org-agenda-filter and org-tags-view
• completion-table-dynamic
• Submitting the empty string
• tmm-menubar (Fixed on Emacs 31)
• ffap-menu (Fixed on Emacs 31)
• Tramp hostname and username completion (Fixed on Emacs 29)