fix(websocket): handle WebSocketStream connection failure

[mcollina]

Fixes #4732

When WebSocketStream fails to connect, return early after rejecting promises to avoid accessing undefined properties.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.87%. Comparing base (7e5cb2d) to head (e040eb9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4733   +/-   ##
=======================================
  Coverage   92.87%   92.87%           
=======================================
  Files         109      109           
  Lines       33826    33831    +5     
=======================================
+ Hits        31415    31421    +6     
+ Misses       2411     2410    -1     

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