Add transaction reverts

[avalonche]

It would be great to have reverting transactions in contender to test revert protection in the builder

[rena-ertam028]

AI tried to solve the issue:

Added support for reverting transactions to test revert protection in the builder:

1. Added optional 'revert' field to FunctionCallDefinition to mark transactions that should revert
2. Added revert flag to PendingRunTx to track reverted transactions
3. Updated TxActor to properly handle and log reverted transactions
4. Added reverting transaction examples to stress.toml scenario

You can review changes in this commit: rena-ertam028@a1aa060.

Caution

Disclaimer: The concept of solution was created by AI and you should never copy paste this code before you check the correctness of generated code. Solution might not be complete, you should use this code as an inspiration only.

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