GtkFileChooser: Support setting filters in GtkBuilder files

Set using:
<object class="GtkFileChooser*">
  <filters>
    <filter>filter_id1</filter>
    <filter>filter_id2</filter>
  </filters>
</object>
Status Job ID Name Coverage
  Build
passed #118935
fedora-x86_64

00:05:45

passed #118936
win32
msys2-mingw32

00:07:42

 
  Flatpak
passed #118937
flatpak:demo

00:04:45

passed #118938
flatpak:widget-factory

00:04:57