fix: disclose WitnessCreateContract 9,999 TRX burn fee (WPN-1719)

[ulissesferreira]

Explanation

When users sign a TRON WitnessCreateContract transaction (registering as a Super Representative candidate), MetaMask's Tron Snap confirmation UI only showed bandwidth fees (~0.291 TRX) and a generic "Unsupported contract for simulation" message. The protocol-enforced irreversible burn of 9,999 TRX (getAccountUpgradeCost) was omitted, so users could approve a transaction believing it cost only network fees.

This change:

1. Includes getAccountUpgradeCost in fee calculation for WitnessCreateContract, so the Network fee line and insufficient-balance checks reflect the full protocol cost (chain parameter with a 9,999 TRX fallback when params are unavailable).
2. Replaces the generic unsupported-simulation copy with an explicit Super Representative candidate disclosure that states the permanent 9,999 TRX burn.

References

• Fixes WPN-1719
• Related: https://github.com/MetaMask/pm-security/issues/698
• Protocol docs: https://developers.tron.network/docs/super-representatives

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them