Chore: Playwright test improvements

[rodrigok]

This changes aims to simplify the creation of users for the tests and the usage of those users and sessions.

It replaces the file sessions by a global map of preexistent users containing the same information that were saved on files.

It replaces the initial login flow (via UI, which was slowing down the test startup) by a pre seed of those users and sessions containing a tokens generated based on the users's usernames.

It was necessary to make a small change on e2e tests to handle the logout, which was removing the session token from the database and to handle the encryption key persistence between tests.

It improves the DRY goal on omnichannel tests making the function to create context a generic one.

It improve the typing of the ILoginToken and adapt the necessary places.

Proposed changes (including videos or screenshots)

Issue(s)

Steps to test or reproduce

Further comments

[codecov]

Codecov Report

Merging #28100 (4ac16d6) into develop (4b2581d) will decrease coverage by 0.06%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop   #28100      +/-   ##
===========================================
- Coverage    44.88%   44.83%   -0.06%     
===========================================
  Files          766      766              
  Lines        14893    14894       +1     
  Branches      2067     2068       +1     
===========================================
- Hits          6684     6677       -7     
- Misses        7918     7925       +7     
- Partials       291      292       +1     

Flag	Coverage Δ
e2e	44.78% <0.00%> (-0.06%)	⬇️

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