Disable outbound messaging in Gateway by default

[yrong]

Resolves: sno-737

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (37ee480) 82.39% compared to head (30a74e9) 82.39%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #990   +/-   ##
=======================================
  Coverage   82.39%   82.39%           
=======================================
  Files          51       51           
  Lines        2079     2079           
  Branches       71       71           
=======================================
  Hits         1713     1713           
  Misses        350      350           
  Partials       16       16           

Flag	Coverage Δ
solidity	76.73% <0.00%> (ø)

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

Files	Coverage Δ
contracts/src/Gateway.sol	78.37% <0.00%> (ø)

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