fix: passing transient payloads

[hperl]

This fixes some bugs where we didn't yet copy around the transient data hard enough.

Related issue(s)

https://github.com/ory-corp/cloud/issues/6067

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.

Further Comments

[jonas-jonas]

Thank you! I suspected I missed a few places. Unified state machine when? 😅

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.01%. Comparing base (8f8fd90) to head (ac62bfd).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3838      +/-   ##
==========================================
+ Coverage   77.98%   78.01%   +0.03%     
==========================================
  Files         359      359              
  Lines       25187    25190       +3     
==========================================
+ Hits        19641    19652      +11     
+ Misses       4039     4032       -7     
+ Partials     1507     1506       -1     

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