Update ASN rules to exclude NIRISS SOSS F277W exposures

[stscijgbot-jp]

Issue JP-3617 was created on JIRA by Howard Bushouse:

The NIRISS SOSS team has agreed that they will not be calibrating the use of SOSS with the F277W filter for quite some time yet (if ever) and hence we should stop trying to process those exposures, instead of having them cause errors when they reach the level-2b pipeline. So the level-2b and level-3 ASN rules for SOSS mode need to be updated to NOT create any associations for SOSS exposures that use the F277W filter. Hence processing will stop with level-2a products.