Fix comment widget and autosuggest request

[Rahmon]

Description of the Change

This change moves the debounce functions outside of keyup event to avoid that a new reference is created and lost the previous one. If not, the same request is sent to the server to fetch the results.

Alternate Designs

Benefits

Possible Drawbacks

Verification Process

1. Add the Elasticpress - Comments widget
2. Type e.g. "dol" (there is a delay of 500 milliseconds)
3. Check if just one request is sent to retrieve the comments.

For Autosuggest, the delay is 200 ms.

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Applicable Issues

Changelog Entry