Fix Timing of clearRequestId and Update Trackers Type Parameter

[saurabhhhcodes]

Changes

• middleware/middleware: Removed premature clearRequestId() that cleared request ID before downstream handlers could use it
• lib/rate-limit: Fixed DistributedCache type parameter for trackers from object to number to match incr() usage

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[retenta-bot]

This PR improves the timing of the clearRequestId function to ensure that the request ID is available for downstream handlers, which is crucial for tracking requests accurately. Additionally, it corrects the type parameter for trackers in the rate-limiting library to align with the expected usage, as discussed in previous decisions regarding type consistency. These changes enhance the reliability of the middleware and align with our ongoing efforts to improve the architecture of our security measures. Thank you for your contributions!

[github-actions]

👋 Hey @saurabhhhcodes! Thanks for your contribution! 🎉

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