Ensure every presence event is published

[7hong13]

What this PR does / why we need it?

Currently, PresenceEvents are published only when the new presence differs from the previous one. However, even if there is no change in presence, the events should still be published to the SDK users. For example, when putting JsonTree-related information into the presence, it can be interpreted differently depending on the state of the JsonTree that the user is consuming.
This PR ensures that every PresenceEvent is emitted to the Document.eventstream.

Any background context you want to provide?

What are the relevant tickets?

Fixes #

Checklist

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

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 79.42%. Comparing base (68a06c5) to head (d03b186).

Files	Patch %	Lines
...ie/src/main/kotlin/dev/yorkie/document/Document.kt	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #164      +/-   ##
==========================================
- Coverage   79.46%   79.42%   -0.05%     
==========================================
  Files          63       63              
  Lines        3877     3879       +2     
  Branches      608      608              
==========================================
  Hits         3081     3081              
- Misses        469      470       +1     
- Partials      327      328       +1     

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