fix: allow attendee to checkin for multiple days

[maze-runnar]

Fixes #2016

required fossasia/open-event-server#8056

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[vercel]

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[codecov]

Codecov Report

Merging #7480 (483cfdf) into development (a3ade1e) will decrease coverage by 0.07%.
The diff coverage is 5.12%.

@@               Coverage Diff               @@
##           development    #7480      +/-   ##
===============================================
- Coverage        20.22%   20.15%   -0.08%     
===============================================
  Files              589      590       +1     
  Lines             6714     6749      +35     
  Branches           149      149              
===============================================
+ Hits              1358     1360       +2     
- Misses            5329     5362      +33     
  Partials            27       27              

Impacted Files	Coverage Δ
.../controllers/events/view/tickets/attendees/list.js	0.00% <0.00%> (ø)
app/models/attendee.js	0.00% <ø> (ø)
.../cell/events/view/tickets/attendees/cell-action.js	6.66% <6.66%> (ø)

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[MeghalBisht]

I am not able to checkout. @maze-runnar Are you able to?

[maze-runnar]

yes.

[MeghalBisht]

@maze-runnar Please recreate this