improvement for cursor position when rename file

[uciharis]

Feature Request : cursor position default

Cosmic-files version:
0.1.0 ~ 1734538799 ~ 24.04~ee7954e

Issue/Bug description:
in many file manager i used before, when you click "rename" or use F2 to rename the file, the cursor is put before extension.

given example, i want to rename file "halo.py" , the cursor is better put here

halo|.py (green line- see picture below)

but in cosmic file, the cursor like :

halo.py| (red line- see picture below)

in my opinion, it is more efficient to put cursor before dot.extension, because we focus to rename the file name not all the string include extension file.

Steps to reproduce:

just right click to target file, choose "Rename", or
press F2

Expected behavior:

i expect the cursor position change before dot and extension file

Other notes: