loadfile: clip long track titles

When a track title is taken from its filename and is longer than 99
characters, clip it to not make track information too verbose.

Fixes #10975 along with #17021.

Author: guidocella

player/loadfile.c

@@ -909,8 +909,13 @@ int mp_add_external_file(struct MPContext *mpctx, char *filename,
             bstr title = bstr0(mp_basename(disp_filename));
             bstr_eatstart(&title, parent);
             bstr_eatstart(&title, bstr0("."));
-            if (title.len)
+            if (title.len > 99) {
+                char *title2 = bstrto0(t, bstr_splice(title, 0, 99));
+                t->title = talloc_asprintf(t, "%s…", title2);
+                talloc_free(title2);
+            } else if (title.len) {
                 t->title = bstrdup0(t, title);
+            }
         }
         t->external_filename = mp_normalize_user_path(t, mpctx->global, filename);
         t->no_default = sh->type != filter;