[REFACTOR] : [Bluesnap] Add connector_transaction_id as fallback for webhooks

[SamraatBansal]

Bug Description

Currently we are only consuming merchant_transaction_id from the webhook body, this was done to tackle the timeouts issue, but seems like Bluesnap doesn't always includes this id, so we need to add connector_transaction_id as fallback for webhook body

Expected Behavior

add connector_transaction_id as fallback for webhook body, so that even if merchant_transaction_id is not present webhook can be processed

Actual Behavior

Currently we are only consuming merchant_transaction_id from the webhook body, this was done to tackle the timeouts issue, but seems like Bluesnap doesn't always includes this id, so we need to add connector_transaction_id as fallback for webhook body

Steps To Reproduce

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Context For The Bug

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Environment

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Have you spent some time checking if this bug has been raised before?

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Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!