set `--disable-stats` if `stats` feature is not enabled
jemalloc defaults to enabling stats if --enable-stats is not present and --disable-stats was not set: https://github.com/jemalloc/jemalloc/blob/fa451de17fff73cc03c31ec8cd817d62927d1ff9/configure.ac#L1331-L1333
This issue was observed when we were building with stats and noticed the output of malloc_stats_print was basically the same.
Before:
After:
It's better to add it in the default feature list in this PR. This is still a breaking change for those rely on stats features without enabling it explicitly though.
@BusyJay Added it to the default features
@BusyJay Anything blocking this PR from being merged? The CI failure looks to be out of my control, the runner timed out. Everything else still passed.
Thanks!