Tags column missing from contact & L2VPN tables

### NetBox version

v3.3.9

### Python version

3.8

### Steps to Reproduce

1. Navigate to the contacts list
2. Configure the table to include a column showing assigned tags

(Repeat for L2VPNs)

### Expected Behavior

The "tags" column should be available as it is for other models.

### Observed Behavior

No "tags" column is available.