feat(prices): add PENDLE to base, bnb, and sonic token lists

[mkzung]

Adds the PENDLE token to the Base, BNB and Sonic prices token lists.

PENDLE trades on all three chains but had no USD price in Spellbook. The
coinpaprika id pendle-pendle already prices PENDLE on Ethereum, Arbitrum,
Mantle and Optimism, so this reuses the existing mapping to close a data
gap. No new coinpaprika id, no schema change, data rows only.

Verified each contract on-chain via eth_call (symbol() == PENDLE, decimals() == 18):

• Base: 0xa99f6e6785da0f5d6fb42495fe424bce029eeb3e https://basescan.org/token/0xa99f6e6785da0f5d6fb42495fe424bce029eeb3e
• BNB: 0xb3ed0a426155b79b898849803e3b36552f7ed507 https://bscscan.com/token/0xb3ed0a426155b79b898849803e3b36552f7ed507
• Sonic: 0xf1ef7d2d4c0c881cd634481e0586ed5d2871a74b https://sonicscan.org/token/0xf1ef7d2d4c0c881cd634481e0586ed5d2871a74b

CoinPaprika: https://coinpaprika.com/coin/pendle-pendle

Precedent: PENDLE was added to Optimism the same way in #6752.

[github-actions]

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[mkzung]

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[cursor]

PR Summary

Low Risk
Static data-only additions to token allowlists; main risk is a wrong contract address mispricing PENDLE on those chains, mitigated by on-chain verification noted in the PR.

Overview
Adds PENDLE to the static CoinPaprika-backed token price maps for Base, BNB, and Sonic, using the existing pendle-pendle id and chain-specific contract addresses (18 decimals each).

This follows the same pattern as PENDLE on Ethereum, Arbitrum, Mantle, and Optimism: no new price feed id or schema change—only new rows in prices_*_tokens so Spellbook can attach USD prices where the token was missing.

^{Reviewed by Cursor Bugbot for commit 596de0c. Configure here.}

[mkzung]

Gentle bump on this one. It has been open a month with all checks green, while token PRs opened either side of it (#9879, #9888) merged within days, so I think it has just been missed rather than held.

The three addresses check out against an independent registry, all 18 decimals: Base 0xa99f6e6785da0f5d6fb42495fe424bce029eeb3e, BNB 0xb3ed0a426155b79b898849803e3b36552f7ed507, Sonic 0xf1ef7d2d4c0c881cd634481e0586ed5d2871a74b. None of the three files carries a PENDLE row today, so there is nothing to duplicate, and the pendle-pendle id is the one already used for PENDLE on Ethereum, Arbitrum, Mantle and Optimism.

Happy to rebase if it has gone stale.