Fix/BUIDL-168 fix msf contract audit issues by srlab 2025 07

[irediaes]

• Replaced post-increment iterators with pre-increment iterators
• Initialized data structures with default values that wasted gas
• Reduced storage overheads by removing dead-code from smart contracts
• Used != instead of > when comparing unsigned integers to zero
• Refactored contract code for gas optimization
• updated code to mitigate executor forcefully claiming sponsorship refund for each transaction

[muhammad-qaisar-abbas]

No issues found. Looks good to me.

• Switching from i++ to ++i in the loops is a nice gas optimization.
• Removing unnecessary initializations like uint256 i = 0; and senderBalance = 0 helps cut down on gas as well.
• Using == 0 instead of < 1 makes the code cleaner and a bit more efficient for unsigned integers.
• Adding the try catch looks good as well.