Changes to magma dynamic block sizes are not permanent

Bring up couchbase and create a bucket.

Change the block size

curl -u $UserName:$PassWord $Host:$AdminPort/pools/default/buckets/$bucket -X POST -d magmaSeqTreeDataBlockSize=$BlockSize

I can see in the memcache log the magma messages indicating the block size change.

2023-02-27T12:10:43.400511-08:00 INFO [(fakeData) magma_0]Magma::SeqTreeDataBlockSize kvid:1020 Default:4096 Old:4096 New:65536

I load data and use magma_dump to prove the block size changes are working.

couchbase-server --stop

couchbase-server --start

I see in the memcache log that the magma config passed in has the block size back to the default value, not the changed value.