refactor: replace deprecated jQuery methods in client code

[deepsource-dev-autofix]

This PR updates the client-side code to remove deprecated jQuery symbols and replace them with modern, native JavaScript or supported jQuery alternatives.

• Client JQuery Deprecated Symbols: jQuery’s shorthand .load() has been replaced with $.get() followed by $container.html(), $.proxy() calls have been swapped out for Function.prototype.bind(), the deprecated .bind() event handler is now .on(), and $.parseJSON checks are replaced with JSON.parse along with using typeof instead of $.type. These changes remove reliance on deprecated APIs, improve compatibility with newer jQuery versions, and enhance code maintainability and performance.

No security configuration was added or modified in this PR.

This Autofix was generated by AI. Please review the change before merging.