Fixes the bounty acceptance email in admin

[SaptakS]

Description

The bounty acceptance email in admin was throwing error because there was no default value for rating_count provided in the function.

Checklist

• Read and conforms to the contributor guidelines
• Read and conforms to the style guidelines
• Linter status: 100% pass
• Added relevant tests
• Tests pass and code coverage has not decreased
• Changes don't break existing behavior
• Commit message follows commit guidelines
• Code documentation
• Completed: Code review by core team and any requested changes

Affected core subsystem(s)

Refers/Fixes

Testing and Sign-off

Contributor

• Read and followed the Contributor Guidelines
• Tested all changes locally
• Verified existing functionality
• Ran make test and everything passed!

Reviewer

• Affirm contributor guidelines have been followed and requested changes made
• CI tests and linting pass
• No conflicts (migrations, files, etc)
• Regression tested against staging or local deployment

Funder

• Validated requested changes were made to specification
• Bounty payout released to the contributor

[codecov]

Codecov Report

Merging #4127 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #4127   +/-   ##
=======================================
  Coverage   30.26%   30.26%           
=======================================
  Files         206      206           
  Lines       16360    16360           
  Branches     2154     2154           
=======================================
  Hits         4951     4951           
  Misses      11233    11233           
  Partials      176      176

Impacted Files	Coverage Δ
app/retail/emails.py	21.56% <100%> (ø)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #4127 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #4127   +/-   ##
=======================================
  Coverage   30.26%   30.26%           
=======================================
  Files         206      206           
  Lines       16360    16360           
  Branches     2154     2154           
=======================================
  Hits         4951     4951           
  Misses      11233    11233           
  Partials      176      176

Impacted Files	Coverage Δ
app/retail/emails.py	21.56% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 74dd8b1...4f62aa0. Read the comment docs.