fix: Ensure JWE expires as expected

[frederikprijck]

The JWE we use for the cookie was never expiring properly, only the cookie had an expiration configured.
This means that the actual value of the cookie, the JWE, is still valid after the cookie is expired.

This PR ensures the JWE expires, in addition to cookie itself and aligns both expirations.

Adding the expiration to the JWE made alot of the tests fail because all tests had a fixed check on the JWE payload, but we have now added an additional expiration property. Therefore, I have changed the tests to use expect.objectContaining()

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 82.05%. Comparing base (6bc280a) to head (d544f19).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/server/session/stateless-session-store.ts	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2040      +/-   ##
==========================================
+ Coverage   82.02%   82.05%   +0.03%     
==========================================
  Files          21       21              
  Lines        1958     1967       +9     
  Branches      343      343              
==========================================
+ Hits         1606     1614       +8     
- Misses        346      347       +1     
  Partials        6        6              

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[frederikprijck]

This is the main thing this PR is fixing. The rest is just accommodating for this change.