Update Hook_Registry validation to use is_numeric() for consistency

- Change is_int() to is_numeric() for priority and args validation
- Matches validation pattern used in add-to-all plugin
- Ensures consistent behavior across all WebberZone plugins

Author: ajaydsouza

includes/util/class-hook-registry.php

@@ -47,10 +47,10 @@ public static function register( $hook_type, $hook_name, $callback, $priority =
 		if ( ! is_callable( $callback ) ) {
 			return false;
 		}
-		if ( ! is_int( $priority ) || $priority < 0 ) {
+		if ( ! is_numeric( $priority ) || $priority < 0 ) {
 			return false;
 		}
-		if ( ! is_int( $args ) || $args < 1 ) {
+		if ( ! is_numeric( $args ) || $args < 1 ) {
 			return false;
 		}