Migrate from uni_links to app_links due to Discontinuation

[may-tas]

Is your feature request related to a problem? Please describe.

• The uni_links package, previously used for deep linking in our Flutter application, is discontinued and no longer maintained. Continuing to use an unsupported package poses potential security risks and compatibility issues, hindering future development and maintenance.

Describe the solution you'd like

• Replace the uni_links package with the actively maintained app_links package to handle deep linking functionalities. This migration will ensure continued support, security, and compatibility with future Flutter releases.

Approach to be followed

1. Dependency Update: Remove the uni_links package from pubspec.yaml and add the app_links package.
2. Code Refactoring: Modify existing deep linking code to utilize the app_links API, ensuring all functionalities are preserved.
3. Testing: Modify all required tests related to deep linking.

Additional context

• This migration is crucial for maintaining the application's stability and security.
• Addressing this issue will facilitate the progress of PR #2697.

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[may-tas]

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