Litespeed Cache plugin compatibility #603

Hello
My name is Tim, I work for Litesped at Wordpres cache plugin.
An user of ours opened a topic about a issue that the plugin has when Litespeed cache is ON. Link: https://wordpress.org/support/topic/nonce_failed-error-when-submitting-form/

I debugged the problem and I found the cause.
I looked into: wp-content/plugins/jetformbuilder/compatibility/litespeed/litespeed.php and I saw the function: on_render_form
Quick fix was to comment out: $this->remove_hooks(); and it works.

But the main problem is that action need to be added only when LSCWP has this option ON: Enable ESI from https://docs.litespeedtech.com/lscache/lscwp/cache/#esi-tab

My suggestion is to change init_hooks like this:

public function init_hooks() {
	$router = \LiteSpeed\Router::cls();

	if( $router->esi_enabled() ){
		add_filter(
			'jet-form-builder/after-start-form',
			array( $this, 'on_render_form' ),
			9
		);
	}
}