feat: updated character length to 3 for ENS controller

[NidhiKJha]

Explanation

This PR is to update ens character length from 7 in regex to 3

Fixes: issue

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

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Note

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