chore(sdk): support DefaultFallbackRoutingIsm in sdk metadata builder

[nambrot]

Description

Support DefaultFallbackRoutingIsm in sdk metadata builder

Backward compatibility

Yes

Testing

Manually processed https://explorer.hyperlane.xyz/message/0x7d5f8450965a97735e39007f7cb9db135852123d589d81f81c113d84e3a70ceb

[changeset-bot]

🦋 Changeset detected

Latest commit: 2a85930

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
@hyperlane-xyz/sdk	Patch
@hyperlane-xyz/cli	Patch
@hyperlane-xyz/helloworld	Patch
@hyperlane-xyz/infra	Patch
@hyperlane-xyz/widgets	Patch
@hyperlane-xyz/core	Patch
@hyperlane-xyz/ccip-server	Patch
@hyperlane-xyz/utils	Patch

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.24%. Comparing base (dac2fb5) to head (2a85930).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4162   +/-   ##
=======================================
  Coverage   73.24%   73.24%           
=======================================
  Files         100      100           
  Lines        1413     1413           
  Branches      178      178           
=======================================
  Hits         1035     1035           
  Misses        357      357           
  Partials       21       21           

Components	Coverage Δ
core	84.61% <ø> (ø)
hooks	72.38% <ø> (ø)
isms	78.41% <ø> (ø)
token	88.88% <ø> (ø)
middlewares	77.39% <ø> (ø)