Include results with tags relevant to the search keyword with JSON rest API v2

Question

WP Extended Search does not work with REST by default since version 2.0.2 This is to achieve maximum compatibility with WordPress and other plugin/themes.

To enable the support, pass wpessid in REST request with ID (for specific search setting) or without ID (for global search setting).
e.g. /wp-json/wp/v2/posts?search=technology&wpessid or /wp-json/wp/v2/posts?search=technology&wpessid=10

Ref: https://wordpress.org/support/topic/search-queries-with-metakey-name-issue-version-2-0-2/#post-14376988

PS:- I am the author of this plugin. To keep things organized I suggest do not post plugin/theme support questions here. Use relevant support forum to ask plugin/theme related question.