docs(tree): tweaks to constraint docs

[yann-achard-MS]

Description

Tweaks to constraint docs in the follow up to #26763.

Breaking Changes

None

[github-actions]

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[Copilot]

Pull request overview

Tweaks SharedTree transaction constraint documentation (follow-up to #26763) to better explain when constraints are evaluated and to clarify the intended semantics of the noChange constraint, plus a small related comment update in delta utilities.

Changes:

• Add a note explaining how/when constraint violations are settled across clients (optimistic local application vs. post-sequencing reconciliation).
• Refine noChange constraint documentation to emphasize whole-document equality and describe “canceling out” concurrent edits.
• Update deltaUtil doc comments to describe “visible changes” in terms of attach/detach.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/dds/tree/src/core/tree/deltaUtil.ts	Updates JSDoc wording for “visible changes” detection helpers.
docs/docs/data-structures/tree/transactions.mdx	Expands constraint timing explanation; refines noChange constraint docs and examples.

[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:
  288641 links
    1922 destination URLs
    2172 URLs ignored
       0 warnings
       0 errors