Update chat and voice assistant name

[digpalsinghk]

Summary

Branch Type

• feature/<short-name>
• bugfix/<short-name>
• hotfix/<short-name>
• chore/<short-name>

Governance Checklist

• This PR targets a protected base branch through a pull request (no direct push).
• Branch naming follows the approved pattern.
• The PR is focused and does not mix unrelated changes.
• I will not approve my own PR.
• At least 1 peer approval is present before merge.
• At least 1 CODEOWNERS approval is present before merge.
• All review comments/threads are resolved before merge.
• I understand approvals must be refreshed after new commits are pushed.

Emergency Fix (Only if Applicable)

• This is an emergency production change.
• If admin bypass is used, post-merge review will be completed within 24 hours.