Change exported GPX filenames to 'YYYY-MM-DD_hh-mm-ss_OSMTracker.gpx'

[InsertUser]

Shared GPX files don't seem to observe the file name preference in settings. Since Android is now making it difficult for other Apps to backup shared folders, I am now relying on the share functionality more as I don't always have a USB cable around. Is this a bug or am I just misinterpreting what the settings are meant to do?

Steps taken:

1. In settings set filename for named tracks to "Start date and time"
2. (New tracks in list now show correctly in "YYYY-MM-DD_hh-mm-ss" format)
3. Long press a track and select "Share GPX"

Expected behaviour:

The file is shared with a name in the format "YYYY-MM-DD_hh-mm-ss.gpx" (matching the track list).

Actual behaviour:

The file is shared with the name "osm-upload{long string of numbers}.gpx".

System info

App version: v1.0.1 (Google Play)
Android 11

[Binnette]

Would be nice, that file name contrains "osmtracker" like: YYYY-MM-DD_hh-mm-ss_OSMTracker.gpx or so.