GtkFileChooser: fix entering location from recent mode

Fix regression from commit c99935a5

We need the g_signal_emit_by_name bit from reset_location_timeout()
for OPEN_FOLDER in recent files to sensitivize the Open button.

Fixes issue #3277
7 jobs for BUG_filechooser_recent_location in 33 minutes and 36 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #948281
debian-meson

00:08:46

passed #948278
fedora-autotools

00:17:09

manual #948279
allowed to fail manual
fedora-distcheck
passed #948280
fedora-meson

00:08:09

manual #948283
win32-ps allowed to fail manual
msys2-mingw64-autotools
passed #948282
win32-ps
msys2-mingw64-meson

00:04:10

 
  Docs
passed #948284
reference

00:16:27