fix: missing JSONStore object

[walidmujahid]

related to recent PR #7254

prevent error in local docker builds due to non-existing JSONStore object by automatically calling create_hackathon_list_page_cache from the get_hackathons view if debug is on.

[codecov]

Codecov Report

Merging #7285 into master will increase coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #7285      +/-   ##
==========================================
+ Coverage   26.10%   26.12%   +0.01%     
==========================================
  Files         300      300              
  Lines       29698    29701       +3     
  Branches     4409     4410       +1     
==========================================
+ Hits         7752     7758       +6     
+ Misses      21674    21671       -3     
  Partials      272      272              

Impacted Files	Coverage Δ
app/dashboard/views.py	10.42% <0.00%> (-0.02%)	⬇️
app/dashboard/embed.py	31.60% <0.00%> (+3.44%)	⬆️

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[thelostone-mc]

Thanks @walidmujahid ! ^_^