[scale] Increase AI tag limit (allow more than 10 per inbox)

We should increase or ultimately remove the limit of 10 AI tags per inbox to allow Support teams to unlock more automated workflows and accelerate deflection.

Support team uses dozens/hundreds of tags to categorize Support inquiry possible, so only being able to choose 10 of those tags in AI tagging rules (i.e. automate actions via rules) puts a ceiling on ROI using Front for deflection and blocks teams to under utilize Front’s core features (i.e. tags, rules).