Chore: remove request button when chat is close

[filipemarins]

Proposed changes (including videos or screenshots)

Remove the request button when the chat is already closed.

Issue(s)

Steps to test or reproduce

Further comments

Request email transcript modal.

Before:

After:

[codecov]

Codecov Report

Merging #27768 (5b3ee65) into feat/chat-transcript (85f61de) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@                   Coverage Diff                    @@
##           feat/chat-transcript   #27768      +/-   ##
========================================================
- Coverage                 42.93%   42.89%   -0.05%     
========================================================
  Files                       818      818              
  Lines                     17267    17267              
  Branches                   1944     1944              
========================================================
- Hits                       7414     7407       -7     
- Misses                     9585     9597      +12     
+ Partials                    268      263       -5     

Flag	Coverage Δ
e2e	42.89% <ø> (-0.05%)	⬇️

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