Backport to restore --subs-with-matching-audio back to "yes" by default
like it was in <0.36 to spare users from confusion and/or needlessly
adjusting their configs until next version.

https://github.com/mpv-player/mpv/issues/11854
https://github.com/mpv-player/mpv/pull/12015
https://github.com/mpv-player/mpv/commit/a2dd78fbc0932a4f47edbe4c41fe268095075c88
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -140,11 +140,11 @@ Track Selection
 
 ``--subs-with-matching-audio=<yes|no>``
     When autoselecting a subtitle track, select a full/non-forced one even if the selected
-    audio stream matches your preferred subtitle language (default: no).
+    audio stream matches your preferred subtitle language (default: yes).
 
 ``--subs-fallback=<yes|default|no>``
     When autoselecting a subtitle track, if no tracks match your preferred languages,
-    select a full track even if it doesn't match your preferred subtitle language (default: no).
+    select a full track even if it doesn't match your preferred subtitle language (default: default).
     Setting this to `default` means that only streams flagged as `default` will be selected.
 
 ``--subs-fallback-forced=<yes|no>``
--- a/options/options.c
+++ b/options/options.c
@@ -1040,7 +1040,8 @@ static const struct MPOpts mp_default_opts = {
         [STREAM_SUB] = (char *[]){ "auto", NULL },
     },
     .stream_auto_sel = true,
-    .subs_with_matching_audio = false,
+    .subs_with_matching_audio = true,
+    .subs_fallback = 1,
     .subs_fallback_forced = true,
     .audio_display = 1,
     .audio_output_format = 0,  // AF_FORMAT_UNKNOWN