fix: #2711 include metadata_admin in admin identity list response

[brahmlower]

The admin identities list response now includes metadata_admin property within the returned identities.

Related issue(s)

#2711

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got the approval (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.
  (n/a: This fix makes the implementation compliant with existing docs)

Further Comments

[codecov]

Codecov Report

Merging #2791 (a8feade) into master (8043371) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2791      +/-   ##
==========================================
- Coverage   75.81%   75.81%   -0.01%     
==========================================
  Files         302      302              
  Lines       17777    17784       +7     
==========================================
+ Hits        13478    13483       +5     
- Misses       3269     3270       +1     
- Partials     1030     1031       +1     

Impacted Files	Coverage Δ
identity/handler.go	87.95% <100.00%> (+0.22%)	⬆️
identity/identity.go	89.94% <100.00%> (+0.22%)	⬆️
persistence/sql/persister_courier.go	82.82% <0.00%> (-2.03%)	⬇️

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[brahmlower]

I'm not sure if there's anything I can do about that failing test for product board synchronization? If there's anything needed of me for that, just let me know 😁

[aeneasr]

Great fix, thank you!

[vinckr]

Hello @brahmlower
Congrats on merging your first PR in Ory 🎉 !
Your contribution will soon be helping secure millions of identities around the globe 🌏.
As a small token of appreciation we send all our first time contributors a gift package to welcome them to the community.
Please drop me an email and I will forward you the form to claim your Ory swag!