`set_fee_rate` event emitted before storage write, listener sees old value

[Junman140]

acbu_minting/src/lib.rs: Events are emitted before the storage set. Backend event listeners query the contract state after receiving the event and get the old fee rate, creating a one-epoch inconsistency.

[soter-fashion]

@soter-fashion has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hello maintainer i will like to work on this issue

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[drips-wave]

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