fix(react): refresh session screen share state

[fatihcvs]

When a connected session starts or stops screen sharing without changing its camera, microphone, or connection state, session.local.screenShareTrack stays stale. Add localScreenShare to the session-state memo dependencies.

The regression tests publish and unpublish a screen-share publication on a real SDK Room, with connection preparation mocked. Both cases fail before the fix and pass afterward. Includes a patch changeset.

Validated locally with Node 24.13.0 on Windows:

• pnpm build:react (styles, core, React)
• React/core/styles tests: 120 passing
• React lint (existing warnings), pnpm format:check
• React api-check

Developed with Codex assistance.

[changeset-bot]

🦋 Changeset detected

Latest commit: 3379db1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@livekit/components-react	Patch
@livekit/agents-ui	Patch
@livekit/component-example-next	Patch
@livekit/components-js-docs	Patch
@livekit/component-docs-storybook	Patch
@livekit/components-docs-gen	Patch

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