Add Test: poll_contract fires AnyTransaction rule for every transaction on the page

[habiba-d-coder]

Priority: High
Crate: txwatch-poller
Labels: testing

Description:
There is no test verifying that when a Horizon page contains multiple transactions, the AnyTransaction rule fires for each one and the webhook is called once per transaction.

Tasks:

• Mount a mock Horizon server returning a page with 3 transactions
• Configure AnyTransaction rule
• Assert the webhook mock receives exactly 3 POST requests

[Yusufolosun]

@Yusufolosun has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi Maintainer, Good day
Please can you entrust the implementation of this issue to me. I am a Full Stack Developer and I can deliver maintainable solution that align with your codebase

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Yusufolosun to this issue.

[bumblebee-2020]

@bumblebee-2020 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

hi team kindly assign me i can work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @bumblebee-2020 to this issue.