Add support open trace viewer from plugin allure-pytest (flow version allure-2.35.1)

We need to add support for opening the Playwright trace viewer directly from Allure reports (version 2.35.1, Flow UI). Currently, traces are attached but not automatically viewable within the Allure Flow interface.

https://github.com/allure-framework/allure2/pull/2964/commits

Acceptance Criteria:

Traces (trace.zip) attached to test results should be openable directly in the Allure Flow UI (v2.35.1).

A button or link should appear in the report to launch the trace viewer.

Ensure compatibility with existing Playwright trace files.

Expected Result:
Users can open Playwright trace viewer seamlessly from Allure Flow reports without leaving the report context.

Beginne mit der Überprüfung der verknüpften Allure-PR-Commits und des bestehenden Ablaufs für trace.zip-Anhänge in allure-pytest. Prüfe, wie Allure Flow v2.35.1 angehängte Playwright-Traces verarbeitet, und verifiziere anschließend, dass ein angehängter Trace den Playwright trace viewer aus dem Report heraus starten kann, ohne ihn zu verlassen.

Vom Indexierungsmodell aus dem Issue-Text verfasst.