Upgrade CLI tool, annotation, form field, and releases improvements

The Sanity CLI has undergone a big behind-the-scenes overhaul. If you were previously running the CLI package directly, you'll want to switch to using sanity for all commands. In addition, there are some new fixes and improvements.

• Dataset embeddings commands: New commands to configure embeddings for datasets.
• Global --project-id and --dataset flags: Run commands outside a project directory without needing a sanity.cli.ts config.
• Non-interactive environment detection: Prompts detect CI/pipeline environments automatically, preventing hangs in automated workflows.
• SDK templates are ESM by default: New projects created via sanity init use ESM.
• Improved MCP setup process.
• Bugfix: Boolean flags no longer get confused with commands that have positional arguments.
• Bugfix: GraphQL and certain other commands now support Vite aliases.
• Bugfix: Strict flag parsing means unknown flags now produce an error instead of being silently ignored (for example, a --datset foo typo now errors instead of doing nothing).

• Annotation popover fix: The Portable Text annotation toolbar popover now appears on the first click instead of requiring two clicks (regression fix).
• Form field column alignment: Using options.columns now aligns fields to the top instead of the bottom, fixing an issue where opening a long field would push adjacent columns out of view.
• Releases overview on mobile: Improved layout and navigation for viewing releases on mobile screens.
• Releases nav menu fix: Links in the release nav menu now work consistently when navigating from the releases overview or drafts.