Updated azps quick filter link for 15.4.0

[mikefrobbins]

PR Summary

Fixes AB#557829 - Updated PowerShell module browser Az quick filter link to version 15.4.0.

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributor's guide.
• Style: This PR adheres to the style guide.

[Copilot]

Pull request overview

Updates the PowerShell Module Browser landing page metadata to keep the Azure PowerShell (Az) quick filter aligned with the latest Az PowerShell module release referenced by the site.

Changes:

• Bumps the Az quick filter token from azps-15.3.0 to azps-15.4.0.
• Updates ms.date to 03/03/2026.

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Learn Build status updates of commit 09059fd:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/module/index.md	✅Succeeded	View

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