fix: show error page on identity mismatch

[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
  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

Attention: Patch coverage is 66.66667% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 78.10%. Comparing base (63ce470) to head (08c670f).
Report is 3 commits behind head on master.

Files	Patch %	Lines
continuity/container.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3790      +/-   ##
==========================================
- Coverage   78.11%   78.10%   -0.02%     
==========================================
  Files         349      349              
  Lines       24113    24113              
==========================================
- Hits        18837    18833       -4     
- Misses       3855     3859       +4     
  Partials     1421     1421              

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