SYS-3955 Improve length comparison part 2

[nahuseyoum]

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?
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• 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

[thadouk]

surely this is an impl version increase