can't switch edition when using the `--reset-on-next-file=all` option

mpv Information

mpv v0.40.0-324-g764da9919 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Sep 16 2025 01:08:51
libplacebo version: v7.354.0 (v7.351.0-67-g515da95-dirty)
FFmpeg version: N-121087-g162e5a112
FFmpeg library versions:
   libavcodec      62.15.100
   libavdevice     62.2.100
   libavfilter     11.9.100
   libavformat     62.5.100
   libavutil       60.13.100
   libswresample   6.2.100
   libswscale      9.3.100

Other Information

- Windows version: Windows 10 22H2
- GPU model, driver and version:
- Source of mpv: https://github.com/zhongfly/mpv-winbuild
- Latest known working version:
- Issue started after the following happened:

Reproduction Steps

• prepare an MKV file containing multiple editions
• mpv test.mkv --no-config --reset-on-next-file=all --log-file=log.txt or
  mpv test.mkv --no-config --reset-on-next-file=edition --log-file=log.txt
• run set edition 1 in console

Expected Behavior

the 2nd edition starts playing

Actual Behavior

the 1st edition restarts playing

Log File

log.txt

Sample Files

N/A

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

Start by reproducing the issue with an MKV containing multiple editions and each listed --reset-on-next-file value, then trace the handling of the reset option and the set edition console command. The fix is complete when edition 1 switches to edition 2 instead of restarting edition 1 in both cases.