fix(react): keep selection handles aligned during transforms

[Sudhansh6]

What does this change?

React renders resize, rotate, and adjustment handles in a stage-level overlay so shape clip paths do not block their hit targets. Drag, resize, and rotate previews update the element DOM directly until pointer-up, but the sibling overlay kept its previous geometry. The shape therefore moved while its blue handles stayed behind, then the handles snapped into place on release.

This change mirrors the temporary left, top, width, height, and transform values to the matching data-pptx-handle-for host. The normal React state commit remains authoritative after pointer-up. Connector handles are unchanged because they remain nested in the element.

Type of change

• Bug fix (non-breaking)
• New feature (non-breaking)
• Breaking change
• Docs / tooling / CI only

Cross-binding parity

This is React-specific because the regression comes from the React binding moving selection handles into a detached stage-level overlay. Other bindings own their handle positioning independently.

Testing

• Added drag and resize preview regressions that assert the element and detached overlay receive identical geometry.
• Added a live rotation regression that asserts the element and detached overlay rotate together before pointer-up.
• Focused React regressions: 4 files and 36 tests passed.
• Full packages/react suite: 370 files and 6,629 tests passed.
• React package typecheck passed.
• Targeted oxfmt and oxlint checks passed.

Checks run locally

• oxfmt --check on changed files
• oxlint --deny-warnings on changed files
• Focused React Vitest regressions
• Full packages/react Vitest suite
• packages/react typecheck

[github-actions]

Cross-binding parity check

This is advisory only and does not block the PR. It looks at changed file paths, so it cannot tell a genuinely framework-specific change from a parity gap. If it is wrong here, just say so in a comment.

Binding	This PR
React	changed
Vue	not changed
Angular	not changed
Svelte	not changed
Vanilla	not changed

UI source changed in 1 of 5 bindings

Changed: React. Not changed: Vue, Angular, Svelte, Vanilla.

If this is a new UI feature, it needs to land in all five. If it is a fix, please confirm in the PR description whether the other bindings have the same defect, and fix the ones that do. If the change really is framework-specific, say so and this note can be ignored.

Binding UI changed with no framework-neutral e2e spec

Specs in e2e/ run against all five demos, so they are what stops a binding quietly falling behind. New UI features should add or extend one. Fixes covered by unit tests can skip this.

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See the parity rule for what is expected. Missing: Vue, Angular, Svelte, Vanilla.

[Sudhansh6]

Confirmed this is React-specific. React renders selection handles in a detached stage-level overlay while drag, resize, and rotate previews imperatively update the element DOM until pointer-up; this PR mirrors those temporary geometry and transform values to that overlay. Vue, Angular, Svelte, and Vanilla instead patch their model or store on every preview frame and derive their overlay geometry reactively, so they do not share this defect. The fix is covered by focused React unit tests, so no cross-binding UI or framework-neutral e2e change is needed for this regression.