[Browser] Upstream Browser and BrowserWebView to Bromite v100.0.4896.57

• Current app version: 98.0.4758.108
• Target app version: 100.0.4896.57
• Release note: https://github.com/bromite/bromite/compare/98.0.4758.108...100.0.4896.57

What's new?

https://github.com/bromite/bromite/compare/98.0.4758.108...100.0.4896.57

Validation

Ensure Browser's requirements are satisfied