Stop batch automatic translation function

### Describe the problem

In my current business, sometimes batch translations can involve thousands of entries. If it accidentally doesn't run as expected, Weblate will continue to run the task without stopping until the machine translation is completed. During this period, I cannot perform new translations, which wastes a lot of time. I believe others also frequently encounter similar issues. Is there any plan to provide an automatic translation stop function?"

### Describe the solution you would like

same as above

### Describe alternatives you have considered

_No response_

### Screenshots

_No response_

### Additional context

_No response_