feat: jito across all solana swappers

[gomesalexandre]

Summary

Use Jito Block Engine as the default Solana transaction submission path for all swappers, not just Butter oversized txs.

Scope

• Jito sendTransaction as default broadcast: Drop-in replacement for standard RPC broadcast across all Solana swappers (Jupiter, Bebop, Butter, Relay). MEV protection for free, just route through Jito's enhanced endpoint.
• signAllTransactions for hdwallet: Add signAllTransactions to hdwallet-core + Phantom/Native implementations for single-approval UX when signing bundle txs. Currently we sign sequentially which means multiple wallet popups.
• Jupiter Jito bundles: Jupiter complex multi-hop routes could benefit from Jito bundles for oversized routes (same pattern as Butter).
• Bebop atomic bundles: ATA creation + swap as an atomic Jito bundle instead of filtering CLMM routes that need ATAs.
• Dynamic priority fees from Jito tip floor API: Replace static priority fee estimation with Jito's ema_landed_tips_50th_percentile for more competitive/accurate fees.
• Transaction retry with Jito resubmission: Retry logic using Jito's enhanced endpoint for failed/dropped transactions.

Context

Jito infra layer and Butter bundle splitting landed in the initial PR. This issue tracks expanding Jito usage across the entire Solana stack.

References

• Jito Block Engine API: https://mainnet.block-engine.jito.wtf
• Tip floor API: https://bundles.jito.wtf/api/v1/bundles/tip_floor
• Rate limit: 1 req/s per IP per region
• No auth required currently

[gomesalexandre]

closed by #12138