feat(fxmcpserver): Updated SSE test client

[ekkinox]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 92.84%. Comparing base (50eae94) to head (a986cfd).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
fxmcpserver/fxmcpservertest/server.go	40.00%	2 Missing and 1 partial ⚠️

❌ Your patch status has failed because the patch coverage (40.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #342      +/-   ##
==========================================
- Coverage   95.68%   92.84%   -2.85%     
==========================================
  Files         210       21     -189     
  Lines        7558      978    -6580     
==========================================
- Hits         7232      908    -6324     
+ Misses        233       51     -182     
+ Partials       93       19      -74     

Flag	Coverage Δ
config	?
fxclock	?
fxconfig	?
fxcore	?
fxcron	?
fxgenerate	?
fxgrpcserver	?
fxhealthcheck	?
fxhttpclient	?
fxhttpserver	?
fxlog	?
fxmcpserver	92.84% <40.00%> (-0.28%)	⬇️
fxmetrics	?
fxorm	?
fxsql	?
fxtrace	?
fxvalidator	?
fxworker	?
generate	?
grpcserver	?
healthcheck	?
httpclient	?
httpserver	?
log	?
orm	?
sql	?
trace	?
worker	?

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.