feature request: unlock size of replace window

[C-Rocky]

Actual behaviour

The size of the replace dialog of the Pluma editor seems to be fixed.

Expected behaviour

I'd like to enlarge it so that I can see complete strings in the search and the replace box even when they are very long.
(By the way: I also have gedit 3.36.2 installed where that dialog box is resizeable).

Steps to reproduce the behaviour

MATE general version

1.24.0

Package version

Pluma

Linux Distribution

Ubuntu 20.04.6 LTS

Link to bugreport of your Distribution (requirement)

[zhuyaliang]

You can click on GtkToggleButton to view the complete search entry string