✨ Clear previously set user context

[amortemousque]

Motivation

Provide an API to clear a previously set user without having to clear all its attributes.
#774

Changes

Allows you to clear a previously set user with the API removeUser()

Testing

Unit, manual

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I have gone over the contributing documentation.

[bits-bot]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #840 (714b862) into main (37332ae) will decrease coverage by 0.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #840      +/-   ##
==========================================
- Coverage   86.81%   86.67%   -0.15%     
==========================================
  Files          82       82              
  Lines        3914     3916       +2     
  Branches      884      884              
==========================================
- Hits         3398     3394       -4     
- Misses        516      522       +6     

Impacted Files	Coverage Δ
packages/rum-core/src/boot/rumPublicApi.ts	94.25% <100.00%> (+0.13%)	⬆️
packages/rum-core/src/transport/batch.ts	62.85% <0.00%> (-11.43%)	⬇️
...omain/rumEventsCollection/error/errorCollection.ts	95.00% <0.00%> (-5.00%)	⬇️
...ckages/core/src/domain/automaticErrorCollection.ts	98.27% <0.00%> (-1.73%)	⬇️

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[bcaudan]

Nice!