when import cache autotuning is disable it is not convenient to set a value

389-ds-base-2.5.2-1.el9.x86_64
cockpit-389-ds-2.5.1-2.module+el9dsrv+22071+e756ccfb.noarch

firefox

1.Create an instance
2.Select 'Database'->import cache tab
3. unselect 'Autotuning'. Then update the value (add 0 to the end). It jumps to 512000. Then Save
dn: cn=bdb,cn=config,cn=ldbm database,cn=plugins,cn=config
nsslapd-import-cachesize: 512000
nsslapd-import-cache-autosize: 0

4.  It is not easy to edit the value, if at any time the new value is below of 512000 then it jumps back to 512000

When editing the value it jumps back to 512000, we need to make sure the value is constantly above 512000

We should be able to set any value in 'import cache size' without being able to save until the value is greater than 512000.
A message could warn that the current value is too low.