fix: socket and saved reply

[RitvikSardana]

1. Socket in customer portal side.
2. Append Saved Reply to email content instead of replacing it

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.56%. Comparing base (acd43e2) to head (3b454c4).
⚠️ Report is 110 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3000      +/-   ##
===========================================
+ Coverage    49.67%   50.56%   +0.88%     
===========================================
  Files          124      122       -2     
  Lines         5399     5403       +4     
===========================================
+ Hits          2682     2732      +50     
+ Misses        2717     2671      -46     

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