fix: Pass user object to send_notif instead of email

[abhinavk96]

Fixes #6090

Instead of the email, the actual user object needs to be passed for notification helper to work.

[codecov]

Codecov Report

Merging #6096 into development will increase coverage by 0.02%.
The diff coverage is 0%.

@@              Coverage Diff               @@
##           development   #6096      +/-   ##
==============================================
+ Coverage        66.17%   66.2%   +0.02%     
==============================================
  Files              285     285              
  Lines            14133   14133              
==============================================
+ Hits              9353    9357       +4     
+ Misses            4780    4776       -4

Impacted Files	Coverage Δ
app/api/helpers/scheduled_jobs.py	26.59% <0%> (+4.25%)	⬆️

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