fix: columns by root request length

[matthewkeil]

Motivation

There is a bug when making byRoot columns requests. The request type was changed to in #7782 and a subtle bug was introduced in how we parse the response.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 54.37%. Comparing base (0a673a0) to head (b243354).
Report is 1 commits behind head on peerDAS.

Additional details and impacted files

@@           Coverage Diff            @@
##           peerDAS    #7917   +/-   ##
========================================
  Coverage    54.37%   54.37%           
========================================
  Files          840      840           
  Lines        61989    61989           
  Branches      4653     4654    +1     
========================================
  Hits         33706    33706           
  Misses       28215    28215           
  Partials        68       68           

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[twoeths]

confirm that it works in all deployed nodes

cannot search for "Missing or mismatching" in the last 30m

[wemeetagain]

🎉 This PR is included in v1.34.0 🎉