Improve browser selection in WebAuthenticationProvider

[RasaCosmin]

This PR adds validation for the packages selected as browsers.

I encountered an issue on a device with Google Chrome disabled and another browser set as the default. Also, that device has an application installed that appears when querying for ACTION_CUSTOM_TABS_CONNECTION but is not a browser. This app is listed first and is returned as a valid browser, but it cannot be used to open a URL.

To address this, each package is checked for validity as a browser using the isBrowserPackage function.

[Copilot]

Pull Request Overview

This PR improves browser selection in WebAuthenticationProvider by adding validation to ensure selected packages are actual browsers capable of opening URLs. The change addresses an issue where non-browser apps that support Custom Tabs connections could be incorrectly selected, causing launch failures.

Key changes:

• Added a new isBrowserPackage function to validate that a package can handle VIEW intents with BROWSABLE category
• Updated browser selection logic to validate both preferred and available Custom Tabs providers before returning them
• Enhanced test coverage with a new test case for Custom Tabs providers that aren't browsers

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
WebAuthenticationProvider.kt	Implemented browser validation logic and refactored browser selection to check packages before returning them
DefaultWebAuthenticationProviderTest.kt	Added test for non-browser Custom Tabs providers and updated helper method to support this scenario

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[Copilot]

Pull Request Overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

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