Fix cost in debug client

[optionsome]

Summary

Fixes generalized cost display in the debug client.

Issue

No issue

Unit tests

No tests

Documentation

No

Changelog

Skipped

[optionsome]

Btw, it feels slightly wrong to use the schema as the source for types. Would it be possible to generate types from the actual queries instead with the libraries we use?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.17%. Comparing base (9d01118) to head (8ea2c2a).
Report is 38 commits behind head on dev-2.x.

Additional details and impacted files

@@            Coverage Diff             @@
##             dev-2.x    #6521   +/-   ##
==========================================
  Coverage      70.17%   70.17%           
+ Complexity     18312    18311    -1     
==========================================
  Files           2082     2082           
  Lines          77211    77211           
  Branches        7831     7831           
==========================================
+ Hits           54184    54185    +1     
+ Misses         20257    20256    -1     
  Partials        2770     2770           

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[optionsome]

Closing this as #6538 fixes this problem and more.