Fix a few array field definition errors in TypeScript

[seratch]

Summary

This pull request resolves a few type errors in block_actions & interactive_message payloads. As these are obvious bugs, we should not keep the backward compatibility with the types.

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

Merging #873 (69534b6) into main (4365f45) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #873   +/-   ##
=======================================
  Coverage   66.08%   66.08%           
=======================================
  Files          13       13           
  Lines        1200     1200           
  Branches      353      353           
=======================================
  Hits          793      793           
  Misses        338      338           
  Partials       69       69           

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[stevengill]

Completely agree @seratch. Thanks for the fix!

[seratch]

Thanks for quick check 👍