Update Outdated FAQs

[lyzhang0113]

This pull request updates two FAQ articles to clarify and expand guidance on browser security restrictions affecting Dynamic Web TWAIN, particularly regarding Local Network Access and insecure HTTP origins in Chromium-based browsers. The changes improve technical accuracy, update instructions for recent browser versions, and provide clearer troubleshooting and policy guidance.

Local Network Access and CORS restrictions (Chromium 142+):

• Expanded and clarified the explanation of Local Network Access (LNA) in Chromium browsers, including new permission prompts and site-setting labels introduced in Chrome 145+. Added guidance on which permissions are required for Dynamic Web TWAIN deployments and updated screenshots and links for current browser UI.
• Improved troubleshooting instructions for common symptoms (service installation prompts, blank scans), including version-specific behavior and clearer explanations of root causes.
• Revised manual and enterprise-level resolution steps, including updated policy documentation links and explicit instructions for iframe deployments and permission checks using the Permissions API.
• Documented product improvements in Dynamic Web TWAIN v19.3+ for better user guidance and clarified that browser security restrictions cannot be bypassed programmatically.

HTTP origin restrictions (Chrome 94+):

• Clarified the impact of Chromium’s Private Network Access restrictions on HTTP sites, including updated explanations of browser behavior and the rationale behind repeated service installation prompts. [1] [2]
• Provided updated resolution steps, emphasizing migration to HTTPS as the only durable solution, and reorganized temporary workarounds with clear notes on their applicability and deprecation in recent Chrome versions.
• Updated references and links to Chrome policy documentation, flags, and enterprise management resources for administrators.

These updates ensure end users and developers have accurate, actionable information for deploying and troubleshooting Dynamic Web TWAIN in modern browser environments.