feat: transmit current session ID to Hydra when accepting the login

[hperl]

This PR is blocked on ory/hydra#3596, because the Hydra client needs to be updated.

Part of https://github.com/ory-corp/cloud/issues/5038

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
  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 #3426 (2546daa) into master (1429949) will increase coverage by 0.01%.
The diff coverage is 77.77%.

❗ Current head 2546daa differs from pull request most recent head 2d5b264. Consider uploading reports for the commit 2d5b264 to get more accurate results

@@            Coverage Diff             @@
##           master    #3426      +/-   ##
==========================================
+ Coverage   77.97%   77.99%   +0.01%     
==========================================
  Files         327      327              
  Lines       21558    21591      +33     
==========================================
+ Hits        16810    16839      +29     
- Misses       3491     3496       +5     
+ Partials     1257     1256       -1     

Files Changed	Coverage Δ
selfservice/flow/verification/handler.go	55.14% <0.00%> (-2.55%)	⬇️
hydra/fake.go	72.72% <40.00%> (-7.28%)	⬇️
hydra/hydra.go	63.41% <100.00%> (+0.45%)	⬆️
selfservice/flow/login/handler.go	81.19% <100.00%> (+0.49%)	⬆️
selfservice/flow/login/hook.go	87.74% <100.00%> (+1.02%)	⬆️
selfservice/flow/registration/hook.go	72.97% <100.00%> (+1.14%)	⬆️

... and 1 file with indirect coverage changes

[aeneasr]

LGTM