update create challenge form's next button functionality

[CollinBeczak]

Issue fixed: User was unable to get past instructions in the paged challenge editor.

[codecov-commenter]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (97d6a4a) 23.58% compared to head (32a6a39) 23.58%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
...lenges/EditChallenge/Schemas/InstructionsSchema.js	11.11%	4 Missing and 4 partials ⚠️
...ge/ManageChallenges/EditChallenge/EditChallenge.js	0.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2271      +/-   ##
==========================================
- Coverage   23.58%   23.58%   -0.01%     
==========================================
  Files         648      648              
  Lines       22497    22505       +8     
  Branches     6953     6956       +3     
==========================================
+ Hits         5307     5308       +1     
- Misses      14373    14377       +4     
- Partials     2817     2820       +3     

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[mvexel]

Thanks for the quick fix!