fix: validate receiver address in CosmosIFTSendCallConstructor

[srdtrk]

Description

closes: #XXXX

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• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
• Wrote unit and integration tests.
• Added relevant natspec and godoc comments.
• Provide a conventional commit message to follow the repository standards.
• Re-reviewed Files changed in the GitHub PR explorer.
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.91%. Comparing base (641c15b) to head (fcd995c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #939   +/-   ##
=======================================
  Coverage   99.90%   99.91%           
=======================================
  Files          27       27           
  Lines        1092     1118   +26     
=======================================
+ Hits         1091     1117   +26     
  Misses          1        1           

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