HPCC-11065 Graph Depth/Distance unresponsive

Change Spin Controls to fire event on every button click.  Previously event was
only fired when user tabbed away from control.

Fixes HPCC-11065

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5576 from GordonSmith/HPCC-11065_GraphSpinner

HPCC-11065 Graph Depth/Distance unresponsive

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>