debing.sun

@tezc because the defragment for ebucket doesn't complete, i increase the threhold to make the test stable, now the test is just for ensuring the correctly updating of references.

@lyveng could you also provide the output of `MEMORY MALLOC-STATS` in 7.2.4? at the same time i saw most of fragmentation is in size class 320(~1G).

@szmcdull `BigInt` in js?

@lyq2333 it's nothing to do with this PR, i found it yesterday but don't know why.

@lyq2333 ~~please have a look at these crash in the following fully CI: https://github.com/sundb/redis/actions/runs/8325132244/job/22781563626 https://github.com/sundb/redis/actions/runs/8325132244/job/22778109249~~ please ignore this, I saw it in other places.

LGTM