correct deposit liquidity ratio #505 #513
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This PR fixes two critical logic bugs in the deposit_liquidity instruction:
Ratio Calculation Fix: The code was incorrectly multiplying pool amounts (pool_a * pool_b) instead of dividing (pool_a / pool_b) to determine the current pool ratio. This led to incorrect LP token calculations.
Arbitrarily selected which input amount to use based on if pool_a > pool_b, which could cause transactions to fail even when users provided sufficient funds