[TT-14794] change behavior explanation when path does not match for a stream

[pvormste]

User description

This PR changes the explanation of what happens when a path does not match on a streams API. This change is introduced for version 5.9.0 and 5.8.3.

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PR Type

Documentation

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Description

• Updated explanation of stream path mismatch behavior.

• Clarified that 404 is returned if no stream path matches.

• Specified change applies from version 5.9.0 onwards.

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Changes walkthrough 📝

	Relevant files
Documentation	event-driven-apis.md Clarify 404 response for unmatched stream paths in docs    tyk-docs/content/api-management/event-driven-apis.md Revised description for unmatched stream paths to state 404 response. Removed outdated note about previous behavior. Clarified middleware behavior for stream route matching. +1/-1

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PR Reviewer Guide 🔍

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Documentation Accuracy Ensure the updated explanation about the 404 response for unmatched stream paths is correct for the specified versions and does not mislead users about behavior in earlier versions. * **If No Match**: The `Stream Middleware` will respond with a `404 Not Found` status code.

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✅ PS. Add to the end of url /docs/nightly

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