Rbf fee from speed up overlay not used for custom transaction editing

The fee rate from the input field above is not used when clicking on "Edit the transaction (advanced)" here:

If you don't provide a fee rate the button click results in:

So, it is unclear here whether an input of the fee rate is expected for the advanced editing or not.

Start by reproducing the speed-up overlay flow shown in the issue, first with a fee rate and then without one, and trace what reaches the advanced transaction editor. Done means the fee-rate behavior is explicit and consistent: the entered rate is either used by advanced editing or the interface clearly indicates that it is not required.

Written by the indexing model from the issue text.