Update NIRISS WFSS ASN rules to constrain PUPIL value between grism and direct exposures

[stscijgbot-jp]

Issue JP-2005 was created on JIRA by Howard Bushouse:

JWSTDMS-471 reported that processing of a NIRISS WFSS observation that used the F090W filter crossed with GRISMC and the F150W filter crossed with GRISMR resulted in spec2 ASN's for the grism exposures that nearly always used direct images taken with the F150W filter, instead of direct images using the F090W filter where appropriate.

The NIRISS WFSS observation template in APT forces the same filter to be used in grism exposures and direct images, so an additional constraint could be added to the level-2b WFSS rules to always match up a direct image with a grism image that uses the same PUPIL value (note that the NIRISS grisms are physically located in the FILTER wheel, so the cross-filters are in the PUPIL wheel).

[stscijgbot-jp]

Comment by Howard Bushouse on JIRA:

Fixed by #5896