Fix presence issues.

[humdrum]

What this PR does / why we need it:

• Fix missing my presence info after updating the document.
• Refactor Document.update() to same as JS.
• Add a excludeMyself parameter to the getPresences()

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Additional documentation:

Checklist:

• Added relevant tests or not required
• Didn't break anything

[codecov]

Codecov Report

Attention: Patch coverage is 8.25688% with 100 lines in your changes are missing coverage. Please review.

Project coverage is 40.95%. Comparing base (d59643b) to head (80d994f).

Files	Patch %	Lines
Tests/Integration/PresenceTests.swift	0.00%	96 Missing ⚠️
Sources/Document/Document.swift	72.72%	3 Missing ⚠️
Sources/Document/Change/Change.swift	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #163      +/-   ##
==========================================
- Coverage   41.18%   40.95%   -0.24%     
==========================================
  Files         105      105              
  Lines       17835    17936     +101     
==========================================
  Hits         7345     7345              
- Misses      10490    10591     +101     

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