fix: expose isSupportedBrowser() utility

[oliverlaz]

💡 Overview

Exposes a utility function that integrators can use to determine whether the current client browser is officially supported by our SDK.

import { Browsers } from '@stream-io/video-<sdk>`

const isSupported = await Browsers.isSupportedBrowser();
if (!isSupported) {
  console.log('This browser isn't supported.');
}

🎫 Ticket: https://linear.app/stream/issue/XYZ-123
📑 Docs: https://github.com/GetStream/docs-content/pull/472

[Copilot]

Pull Request Overview

This PR exposes a new utility function isSupportedBrowser() that allows integrators to check if the current browser is officially supported by the Stream Video SDK. The function checks for Chrome, Edge, Firefox, and Safari with specific minimum version requirements.

Key changes include:

• Enhanced browser version detection using the User-Agent Client Hints API
• Added new isSupportedBrowser() function with version-based support validation
• Comprehensive test coverage for the new functionality

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
packages/client/src/helpers/client-details.ts	Enhanced to collect full version list from User-Agent Client Hints API for more accurate browser version detection
packages/client/src/helpers/browsers.ts	Added new isSupportedBrowser() function that validates browser support based on name and minimum version requirements
packages/client/src/helpers/tests/browsers.test.ts	Added comprehensive test suite covering all browser detection functions including edge cases and version validation