Users popover on bounty details

[octavioamu]

Description

close others popovers before open a new
Abort ongoing users request when hover a diff user.

Refers/Fixes

Fix #5493

Testing

[codecov]

Codecov Report

Merging #5515 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5515   +/-   ##
=======================================
  Coverage   29.12%   29.12%           
=======================================
  Files         242      242           
  Lines       20912    20912           
  Branches     3023     3023           
=======================================
  Hits         6091     6091           
+ Misses      14576    14573    -3     
- Partials      245      248    +3

Impacted Files	Coverage Δ
app/dashboard/views.py	12.7% <0%> (ø)	⬆️
...rketing/management/commands/no_applicants_email.py	0% <0%> (ø)	⬆️

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