fix(sdk): correct polymorph type for consent session

[aeneasr]

Closes #3058

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 green light (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.

Further Comments

[codecov]

Codecov Report

Merging #3074 (3348205) into master (57693f6) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3074      +/-   ##
==========================================
- Coverage   79.42%   79.40%   -0.03%     
==========================================
  Files         112      112              
  Lines        7889     7889              
==========================================
- Hits         6266     6264       -2     
- Misses       1222     1223       +1     
- Partials      401      402       +1     

Impacted Files	Coverage Δ
persistence/sql/persister_oauth2.go	81.01% <0.00%> (-0.85%)	⬇️

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