Use PODS_DIR instead of WP_PLUGIN_DIR for locate_template. Fix #2221

Can you make this:

`if ( false === strpos( $_real_view, realpath( PODS_DIR ) ) && false === strpos( $_real_view, realpath( WP_PLUGIN_DIR ) ) && false === strpos( $_real_view, realpath( WPMU_PLUGIN_DIR ) ) ) {`