Make the_content filter a filterable option.

This is causing display problems for some users, better to make it optional.

src/my-calendar-output.php

@@ -1381,10 +1381,23 @@ function mc_show_event_template( $content ) {
 			$content = do_shortcode( apply_filters( 'mc_event_post_content', $new_content, $content, $post ) );
 		}
 	}
-	// Execute content filters so that OEmbeds are processed, after removing this filter.
-	remove_filter( 'the_content', 'mc_show_event_template', 100, 1 );
-	$content = apply_filters( 'the_content', $content );
-	add_filter( 'the_content', 'mc_show_event_template', 100, 1 );
+	/**
+	 * Enable running `the_content` filters on My Calendar output.
+	 * Allows oembed and block articulation, but may cause other problems.
+	 *
+	 * @hook mc_execute_the_content
+	 *
+	 * @param {bool} $execute Whether `the_content` will be run. Default false.
+	 *
+	 * @return {bool}
+	 */
+	$execute_the_content = apply_filters( 'mc_execute_the_content', false );
+	if ( $execute_the_content ) {
+		// Execute content filters so that OEmbeds are processed, after removing this filter.
+		remove_filter( 'the_content', 'mc_show_event_template', 100, 1 );
+		$content = apply_filters( 'the_content', $content );
+		add_filter( 'the_content', 'mc_show_event_template', 100, 1 );
+	|
 
 	return $content;
 }