fix: use explicit string value for skipNetworkIdleEvent

[Tugzrida]

As php casts the boolean false to the empty string, which is not a valid value for go's strconv.ParseBool, it was not possible to set skipNetworkIdleEvent to false.

This change uses the explicit strings 'true' and 'false' instead to ensure the correct value is passed on the wire.

[gulien]

Thanks for the heads up @Tugzrida!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.00%. Comparing base (dce958d) to head (62d4fb3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #57   +/-   ##
=========================================
  Coverage     95.00%   95.00%           
- Complexity      175      176    +1     
=========================================
  Files            17       17           
  Lines           500      500           
=========================================
  Hits            475      475           
  Misses           25       25           

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[gulien]

Thanks @Tugzrida!