Replacing a dynamic via palettes should not overwrite its properties

[avvvvve]

A dynamic marking can be edited by selecting it in the score, then choosing a different one in the Dynamics palette. However, doing so resets the dynamic's properties to the defaults.

Instead, the new dynamic should inherit all the properties of the dynamic it replaced.

In the video below, see that the voice of the new dynamic is determined by the choice in Preferences > Note input > Dynamics & hairpins. This should have no bearing on properties when replacing a dynamic.

dynamics_properties_replace.mp4

Note that this is already how it's working in the new dynamics popup PR: #23038