HPCC-12088 Improve initial Graph experience

Automatically show entire graph.
Prompt the user if graph is "complex" - to optionally display entire graph.
Disable depth and distance spin boxes as appropriate.
Improve depth, distance and sync tooltips.

Fixes HPCC-12088

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #6354 from GordonSmith/HPCC-12088

HPCC-12088 Improve initial Graph experience

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>