Disable SAVEQUERIES in WP CLI commands (#4981)

* disable SAVEQUERIES for all the WP CLI commands, unless already defined.

* fix linting (missing space)

wp-cli.php

@@ -45,6 +45,16 @@ function maybe_toggle_is_ssl() {
 	}
 }
 
+/**
+ * Disable the SAVEQUERIES for all the WP CLI interactions, unless already defined.
+ * SAVEQUERIES tracks is quite expensive if turned on and can lead to OOM and performance issues, it should be enabled only when needed.
+ */
+function maybe_disable_savequeries() {
+	if ( ! defined( 'SAVEQUERIES' ) ) {
+		define( 'SAVEQUERIES', false );
+	}
+}
+
 /**
  * Disable `display_errors` for all wp-cli interactions on production servers.
  *
@@ -71,6 +81,8 @@ function disable_display_errors() {
 
 	init_is_ssl_toggle();
 
+	maybe_disable_savequeries();
+
 	foreach ( glob( __DIR__ . '/wp-cli/*.php' ) as $command ) {
 		require $command;
 	}