gradle: run gradle command instead of alias (#8620)

- Similarly to the mvn plugin
- Without this fix, the shell crashes in some cases

plugins/gradle/gradle.plugin.zsh

@@ -7,7 +7,7 @@ gradle-or-gradlew() {
 		echo "executing gradlew instead of gradle";
 		./gradlew "$@";
 	else
-		gradle "$@";
+		command gradle "$@";
 	fi
 }