Fixed default value for activitypub_authorized_fetch (#1465)

* fix default for `activitypub_authorized_fetch`

* Add changelog

* fixed value attribute

props @obenland

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: pfefferle

.github/changelog/1465-from-description

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Fixed default value for `activitypub_authorized_fetch` option.

includes/wp-admin/class-settings-fields.php

@@ -466,7 +466,7 @@ public static function render_outbox_purge_days_field() {
 	 * Render use hashtags field.
 	 */
 	public static function render_authorized_fetch_field() {
-		$value = get_option( 'activitypub_authorized_fetch', '1' );
+		$value = get_option( 'activitypub_authorized_fetch', '0' );
 		?>
 		<p>
 			<label>