R1:61216dc641a5

Fix a JS error when adding a project card directly to a subproject from a workboard

Summary:
Fixes T12152. When creating a subproject task directly from a parent project, we can get column information back about the subproject column, which isn't visible. Just ignore this rather than trying to draw a card into a column which does not exist.

This flow (see test plan) is a little unintuitive since the card never appears on the workboard, but this class of things is probably roughly somewhere in T4900.