chore: improve tracing on recovery and verification

[jonas-jonas]

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 #3586 (5dc724d) into master (f7c6767) will increase coverage by 0.04%.
The diff coverage is 100.00%.

❗ Current head 5dc724d differs from pull request most recent head 495203e. Consider uploading reports for the commit 495203e to get more accurate results

@@            Coverage Diff             @@
##           master    #3586      +/-   ##
==========================================
+ Coverage   78.26%   78.31%   +0.04%     
==========================================
  Files         342      342              
  Lines       23402    23414      +12     
==========================================
+ Hits        18316    18336      +20     
+ Misses       3705     3699       -6     
+ Partials     1381     1379       -2     

Files	Coverage Δ
selfservice/strategy/code/strategy_login.go	72.14% <100.00%> (ø)
selfservice/strategy/code/strategy_recovery.go	71.52% <100.00%> (+0.18%)	⬆️
selfservice/strategy/code/strategy_verification.go	72.06% <100.00%> (+0.47%)	⬆️
selfservice/strategy/link/strategy.go	100.00% <ø> (ø)
selfservice/strategy/link/strategy_recovery.go	64.75% <100.00%> (+0.43%)	⬆️
selfservice/strategy/link/strategy_verification.go	63.46% <100.00%> (+0.96%)	⬆️

... and 2 files with indirect coverage changes