Fix truth primary flag storage type

[jdkio]

The branch is written as a bool but used int array to fill. This would work but prints a warning. This fixes the issue.

[jdkio]

Validated that nothing changes other than the warning:

# Before:
Truth_Info->Scan("RecoTrackPrimaryParticleIsPrimary:RecoTrackSecondaryParticleIsPrimary", "RecoTrackN>0")
***********************************************
*    Row   * Instance * RecoTrack * RecoTrack *
***********************************************
*        2 *        0 *         1 *         1 *
*        3 *        0 *         1 *         0 *
*        3 *        1 *         0 *         0 *
*        5 *        0 *         1 *         0 *
*        9 *        0 *         1 *         1 *
*       12 *        0 *         1 *         1 *
*       14 *        0 *         1 *         0 *
*       18 *        0 *         1 *         1 *
*       19 *        0 *         1 *         0 *
*       23 *        0 *         1 *         0 *
*       30 *        0 *         1 *         0 *
*       31 *        0 *         1 *         1 *
*       32 *        0 *         1 *         0 *
*       38 *        0 *         1 *         0 *
*       40 *        0 *         1 *         0 *
*       44 *        0 *         1 *         1 *
*       44 *        1 *         0 *         0 *
*       45 *        0 *         1 *         1 *
*       46 *        0 *         1 *         1 *
*       47 *        0 *         1 *         0 *
*       53 *        0 *         1 *         1 *
*       54 *        0 *         0 *         1 *
*       56 *        0 *         1 *         1 *
*       59 *        0 *         1 *         0 *
*       60 *        0 *         1 *         0 *

# After:
Truth_Info->Scan("RecoTrackPrimaryParticleIsPrimary:RecoTrackSecondaryParticleIsPrimary", "RecoTrackN>0")
***********************************************
*    Row   * Instance * RecoTrack * RecoTrack *
***********************************************
*        2 *        0 *         1 *         1 *
*        3 *        0 *         1 *         0 *
*        3 *        1 *         1 *         0 *
*        5 *        0 *         1 *         0 *
*        9 *        0 *         1 *         1 *
*       12 *        0 *         1 *         1 *
*       14 *        0 *         1 *         0 *
*       18 *        0 *         1 *         1 *
*       19 *        0 *         1 *         0 *
*       23 *        0 *         1 *         0 *
*       30 *        0 *         1 *         0 *
*       31 *        0 *         1 *         1 *
*       32 *        0 *         1 *         0 *
*       38 *        0 *         1 *         0 *
*       40 *        0 *         1 *         0 *
*       44 *        0 *         1 *         1 *
*       44 *        1 *         1 *         1 *
*       45 *        0 *         1 *         1 *
*       46 *        0 *         1 *         1 *
*       47 *        0 *         1 *         0 *
*       53 *        0 *         1 *         1 *
*       54 *        0 *         0 *         1 *
*       56 *        0 *         1 *         1 *
*       59 *        0 *         1 *         0 *
*       60 *        0 *         1 *         0 *