Can the employee resign from a limited contract without getting banned?

Hello there.

I am working in a government organization here in the UAE. I was employed last January 2020 and was supposed to be a regular employee last July 2020.

But last April 2020 they released a memo saying that all regularisation and promotions of employees will be on hold due to the pandemic and financial situation of the company.

Up until now, I am still receiving a probationary salary. I wish to resign and transfer to a semi government company.

Can my employer impose an employment ban on me if I resign?

I have a limited contract by the way.

Thank you in advance for answering my question.