fix(llc): fix x-stream-client header

[imtoori]

No description provided.

[xsahil03x]

Reason?

[codecov]

Codecov Report

Merging #1215 (beb39d3) into develop (7732953) will decrease coverage by 0.01%.
The diff coverage is 41.17%.

@@             Coverage Diff             @@
##           develop    #1215      +/-   ##
===========================================
- Coverage    67.89%   67.87%   -0.02%     
===========================================
  Files          228      228              
  Lines        23560    23561       +1     
===========================================
- Hits         15995    15992       -3     
- Misses        7565     7569       +4     

Impacted Files	Coverage Δ
...src/v4/message_input/stream_attachment_picker.dart	31.91% <9.09%> (-1.42%)	⬇️
packages/stream_chat/lib/src/client/client.dart	90.43% <100.00%> (ø)
...kages/stream_chat_flutter/lib/src/stream_chat.dart	97.67% <100.00%> (ø)
...am_chat_flutter_core/lib/src/stream_chat_core.dart	91.30% <100.00%> (ø)

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