[FIX] Omnichannel Take Inquiry endpoint checking wrong permission

[renatobecker]

Proposed changes

The livechat/inquiries.take was checking a permission design to be assigned to admins and managers only, so agents weren't able to take inquiries from other clients other than the web client, which is still using the livechat:takeInquiry meteor method.
Since the endpoint calls the same livechat:takeInquiry meteor method, there is no reason to check additional permission.

Issue(s)

CLOSES #18440

How to test or reproduce

• As a user who have the livechat-agent role, try to take an omnichannel Inquiry through the livechat/inquiries.take REST endpoint;
• The request won't be accepted due to the wrong/unecessary permission checked

Screenshots

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Hotfix (a major bugfix that has to be merged asap)
• Documentation Update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

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Further comments