Party field not updated in 2B entry post import

[karthikeyan5]

1. need to figure out how to keep these updates to party/GSTIN in sync with 2B entries
   - update: There is a "link supplier" button in 2B entry. But, it only updates the current entry. Consider adding a button "update supplier for all entries"
2. at least update the party field during linking of 2B entries for now