hotfix: start date multisig

[M-Francia]

Description

Fix start date in multisig mode

Fixes # (issue) 🛠️

Type of change

• [x] Bug fix (non-breaking change which fixes an issue) 🐞
• [ ] New feature (non-breaking change which adds functionality) ✨
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) 💥
• [ ] This change requires a documentation update 📖

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration. 🧪

• [x] Local Tests (npm run test)
• [ ] Local Example (npx tsx examples/index.ts)
• [ ] Local Github Actions (act pull_request)

Test Configuration:

• Node version (latest LTS):
  • [ ] 16
  • [x] 18
  • [ ] 20