Fixes the transaction-type radio button (was matching nothing; now
targets the real data-testid), and adds a Deltains fee schedule
(seeded from DDMA's prices) so Deltains claims stop falling back to
MassHealth pricing.
Adds a full "Deltains Claim" button next to Delta MA Claim, mirroring
the DDMA claim flow across frontend, backend queue/routes, and a new
Selenium worker. Reuses the existing Deltains eligibility login/OTP
code and was iteratively wired against the live portal (patient roster
search, per-service-line fields, tooth number/surface selects, review
and submit). Also fixes chatbot/insurance-alias carrier recognition so
"deltains" resolves correctly instead of falling back to MassHealth.
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