fix: query objects doesn't dispatch properly

[cbaker6]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Changes in #291 refactored important asynchronous callbacks. There was one missed which can cause a crash while querying.

Related issue: #n/a

Approach

After querying the server, be sure to dispatch back to the proper queue

TODOs before merging

• Add fix
• Add entry to changelog

[parse-github-assistant]

Thanks for opening this pull request!

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[codecov]

Codecov Report

Merging #293 (7a5d714) into main (4734212) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #293   +/-   ##
=======================================
  Coverage   82.36%   82.36%           
=======================================
  Files         104      104           
  Lines       10659    10666    +7     
=======================================
+ Hits         8779     8785    +6     
- Misses       1880     1881    +1     

Impacted Files	Coverage Δ
...urces/ParseSwift/API/API+NonParseBodyCommand.swift	75.79% <100.00%> (+0.31%)	⬆️
Sources/ParseSwift/Objects/ParseUser.swift	79.97% <0.00%> (-0.13%)	⬇️
...Authentication/Protocols/ParseAuthentication.swift	72.16% <0.00%> (+0.88%)	⬆️

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