Fix empty group creation issue (Nadabot V2)

[lachlanglen]

Describe the bug

The contract allows to create empty groups but only as long as there's no empty groups at the moment of new group creation

See telegram message: https://t.me/c/1891491670/9/7329

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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