fix: dev: Don't skip the counting if fcount_incr() is called with force==true

The fcount_incr() was incorrectly skipping the accounting for the
fetches-per-zone if the force argument was set to true.  We want to skip
the accounting only when the fetches-per-zone is completely disabled,
but for individual names we need to do the accounting even if we are
forcing the result to be success.

Closes #4786

Merge branch '4786-forced-fcount_incr-should-still-increment-count-and-allowed' into 'main'

Closes #4786

See merge request isc-projects/bind9!9115