HPCC-10384 - Potential spillable row stream race condition crash

If the derived spillable row stream set compression (default),
the base which already added the roxiemem callback in it's base
constructor, could get called and spill uncompressed. When read
back the implementation thought the spill file was compressed
and failed to read it it.

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>