Merge-Tree and SharedString ISegment Deprecations

[anthony-murphy]

The current ISegment interface over-exposes a number of properties which do not have an external use case, and any external usage could result in damage to the underlying merge-tree including data corruption.

The only use case that will continue to be supported is determining if a segment is removed. For this purpose we've add the following function segmentIsRemoved(segment: ISegment): boolean

For example, checking if a segment is not removed would change as follows:

- if(segment.removedSeq === undefined){
+ if(!segmentIsRemoved(segment)){

The following properties are deprecated on ISegment and its implementations:

• clientId
• index
• localMovedSeq
• localRefs
• localRemovedSeq
• localSeq
• movedClientsIds
• movedSeq
• movedSeqs
• ordinal
• removedClientIds
• removedSeq
• seq
• wasMovedOnInsert

Additionally, the following types are also deprecated, and will become internal:

• IMergeNodeCommon
• IMoveInfo
• IRemovalInfo
• LocalReferenceCollection

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

[alexvy86]

Aproving for docs with a couple of suggestions.

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> fluid-framework-docs-site@0.0.0 ci:check-links /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test "npm run serve -- --no-open" 3000 check-links

1: starting server using command "npm run serve -- --no-open"
and when url "[ 'http://127.0.0.1:3000' ]" is responding with HTTP status code 200
running tests using command "npm run check-links"


> fluid-framework-docs-site@0.0.0 serve
> docusaurus serve --no-open

[SUCCESS] Serving "build" directory at: http://localhost:3000/

> fluid-framework-docs-site@0.0.0 check-links
> linkcheck http://localhost:3000 --skip-file skipped-urls.txt

Crawling...

Stats:
  170006 links
    1595 destination URLs
    1825 URLs ignored
       0 warnings
       0 errors