Add l.v. ties to palettes

[XiaoMigros]

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

Laissez vibrer ties are very difficult to find in the UI: Unlike almost all other elements, they can't be found in the palettes. Instead, a user has to enable a button in the toolbar and then use that button to apply them. Adding them to the palettes would make them more discoverable and accessible. In previous MuseScore versions, the smufl symbol was located there.

What is the latest version of MuseScore Studio where this issue is present?

master

Regression

Yes, this used to work in a previous version of MuseScore 4.x

Operating system

Windows 10

Additional context

No response

Checklist

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• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible