v0.54.4 — a Solana video settle whose outcome is unknown is waited out, never "no charge"

Fixed — a Solana video settle whose outcome is unknown is waited out, never "no charge" (#177)

When a finished video's payment settle times out, sol.blockrun.ai answers 402
Payment settlement outcome unknown with Retry-After and holds the job;
other polls get settlement in progress on a concurrent poll. The client
ignored Retry-After, spent its three re-signs about 15s into a 90s hold, and
reported "no charge was made" while that payment could still land.

• Held answers honour Retry-After and re-sign with a fresh blockhash without
  spending the re-sign budget; the call deadline still bounds them.
• Once a payment's outcome is open, every exit (deadline, a 500 poll answer,
  an unreadable challenge, a refused fresh settle) books the quote and says
  the job MAY have been charged, instead of booking nothing.
• A completion 402 whose challenge cannot be read falls back to
  payment-signed polling instead of aborting the finished job.
• Music and image (paid at submit), the Base rail and the account rail are
  unchanged.