Circular dependency warnings in @internationalized/date during Vite build

Title: Circular dependency warnings in @internationalized/date during Vite/SvelteKit build

Description
-----------
While building a SvelteKit project with Vite, I see several "Circular dependency" warnings coming from the `@internationalized/date` package. The build completes successfully, but the warnings are noisy and may indicate module import cycles that could cause initialization/order issues in some bundlers or runtimes.

Environment
-----------
- Package: `@internationalized/date` v3.12.0
- Repo: https://github.com/adobe/react-spectrum (package path: packages/@internationalized/date)
- Build tool: Vite (v7.x) used by SvelteKit
- OS: Windows (dev environment)
- Project: SvelteKit app using `@internationalized/date` as a dependency (direct devDependency and used by `bits-ui`)

Relevant log excerpt (from `npm run build`)
-------------------------------------------
Circular dependency: node_modules/@internationalized/date/dist/CalendarDate.mjs -> node_modules/@internationalized/date/dist/manipulation.mjs -> node_modules/@internationalized/date/dist/conversion.mjs -> node_modules/@internationalized/date/dist/CalendarDate.mjs
Circular dependency: node_modules/@internationalized/date/dist/manipulation.mjs -> node_modules/@internationalized/date/dist/conversion.mjs -> node_modules/@internationalized/date/dist/manipulation.mjs
Circular dependency: node_modules/@internationalized/date/dist/CalendarDate.mjs -> node_modules/@internationalized/date/dist/manipulation.mjs -> node_modules/@internationalized/date/dist/conversion.mjs -> node_modules/@internationalized/date/dist/GregorianCalendar.mjs -> node_modules/@internationalized/date/dist/CalendarDate.mjs
Circular dependency: node_modules/@internationalized/date/dist/conversion.mjs -> node_modules/@internationalized/date/dist/queries.mjs -> node_modules/@internationalized/date/dist/conversion.mjs
Circular dependency: node_modules/@internationalized/date/dist/CalendarDate.mjs -> node_modules/@internationalized/date/dist/string.mjs -> node_modules/@internationalized/date/dist/CalendarDate.mjs

Additional checks I ran
-----------------------
- `npm ls @internationalized/date` shows a single installed version (3.12.0) — no duplicated versions in the application.
- The build completes with exit code 0 and the app appears to run fine when previewed, so this is currently a warning rather than a hard failure.

Why I think this is worth flagging
----------------------------------
- Circular imports can result in `undefined` exports depending on execution order in certain bundlers or at runtime (particularly for ES module initialization). They also make tree-shaking and optimizations less predictable.
- The warnings originate from the `dist/*.mjs` modules (CalendarDate, manipulation, conversion, queries, string, GregorianCalendar) and appear during module graph analysis by Vite/Rollup.

Suggested direction / questions
--------------------------------
- Could the code in `src` be refactored to break these cycles? For example, extract shared helpers into a single utility module (no back-imports), or reorganize responsibilities to avoid mutual imports between `CalendarDate`, `manipulation`, `conversion`, and `queries`.
- Are these cycles intentional (e.g., documented) and benign for runtime, or would you consider a refactor to avoid them?

Reproduction
------------
1. In a SvelteKit project that depends on `@internationalized/date` (v3.12.0), run:

```bash
npm install
npm run build
```

2. Observe circular dependency warnings similar to the excerpt above in the build output.

If helpful, I can try to create a minimal reproduction repo or point to the full build logs from my project.

Thanks for any guidance — and happy to provide more info (node/vite versions, a small repro, or debug traces) if useful.