Proposed changes

This PR adds some minor improvements when doing checks to determine if a vector is empty or not.

Type of change/Merge

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• Release
  • Increase versions
  • Baseline tests passed
  • Release type:
    • Major release
    • Minor release
    • Patch release

Checklist

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• You describe the purpose of the PR, e.g.:
  • What does it do?
  • Highlight what important points reviewers should know about;
  • Indicates if there is something left for follow-up PRs.
• Documentation updated
• Business logic tested successfully
• Verify First, Write Last: In Substrate development, it is important that you always ensure preconditions are met and return errors at the beginning. After these checks have completed, then you may begin the function's computation.

Further comments