Update changelog for AuthTab provider-based rework

Agent-Logs-Url: https://github.com/AzureAD/microsoft-authentication-library-common-for-android/sessions/53bb72ec-e08a-4a79-8c2e-a30206ecbfd0

Co-authored-by: p3dr0rv <76129899+p3dr0rv@users.noreply.github.com>

Author: Copilot

changelog.txt

@@ -1,5 +1,6 @@
 vNext
 ----------
+- [MINOR] Rework switch browser Auth Tab integration to provider-based strategy selection compatible with androidx.browser:browser:1.7.0, adding AuthTabStrategyProvider and BrowserLaunchStrategy with Custom Tabs fallback
 - [PATCH] Move Multiple Listening apps check to the authorization layer (#3070)
 - [PATCH] Add support for Authenticator app activation links in WebView, enabling account pairing/MFA flows to launch Microsoft Authenticator directly instead of redirecting to the Play Store (#3090)
 - [PATCH] Fix: WPJ's BrokerDiscovery cache crash due to shared predefined encryption key with MSAL (#3081)