HITL: FoTT does not check how many unlabeled docs in the project

[alex-krasn]

Describe the bug When setting auto-labeling batch does not check how many documents in the project and allows, for example, FoTT allows to setup next batch to auto-labels documents of 10 docs, when there is no that many documents in the project. Which might be confusing for user. To Reproduce Screenshots

Desktop (please complete the following information):

• OS: [e.g. Win10/Linux-flavor]
• Docker version
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here. e.g, your Azure Resource region