fix: issuer missing from netid claims

[aeneasr]

Related issue(s)

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
  [email protected]) 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.

Further Comments

[codecov]

Codecov Report

Merging #3080 (42747c7) into master (8e87693) will decrease coverage by 0.01%.
The diff coverage is 60.00%.

❗ Current head 42747c7 differs from pull request most recent head 49af440. Consider uploading reports for the commit 49af440 to get more accurate results

@@            Coverage Diff             @@
##           master    #3080      +/-   ##
==========================================
- Coverage   77.25%   77.24%   -0.01%     
==========================================
  Files         314      314              
  Lines       19652    19662      +10     
==========================================
+ Hits        15182    15188       +6     
- Misses       3294     3296       +2     
- Partials     1176     1178       +2     

Impacted Files	Coverage Δ
selfservice/strategy/oidc/provider_config.go	32.65% <0.00%> (ø)
selfservice/strategy/oidc/strategy.go	63.31% <ø> (ø)
selfservice/strategy/oidc/provider_netid.go	75.00% <63.15%> (-3.27%)	⬇️

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