Updated intra_H_migration TS_groups to match current master groups
Trained group with the 21 TS geometries.

The groups and tree structure were updated to match
the kinetics groups on the master branch. The values
were trained with the same data.
Avoid redundant loading of TS database when training.

The transition states groups are already loaded in
the RMG Database. Use that instead of loading the
transition states database again as a second variable.