fix: give the account modal an accessible name

[owenpkent]

Fixes #2700.

What

AccountModal sets aria-labelledby="rk_account_modal_title" on its dialog, but the body it renders, ProfileDetails, hardcoded its own heading id, rk_profile_title, and put that same id on the balance heading as well. The reference never resolved, so the account modal was announced as an unnamed dialog, and the duplicated id was invalid on its own.

ProfileDetails now takes the titleId from AccountModal and renders it on the account name only. The dialog is therefore announced by the connected address or ENS name, the way ChainModal and the connect flow already pair a dialog with its heading. No user-facing strings change, so no locale files are touched.

Testing

• New AccountModal.test.tsx, in the style of ChainModal.test.tsx: connects the mock wallet, then asserts the dialog's aria-labelledby resolves to exactly one element, that the element holds the formatted address, and that the dialog's accessible name is that address.
• pnpm test (full suite), biome lint, biome check and the package typecheck all pass locally.
• Re-ran axe-core and IBM Equal Access against the built package in a small Vite app with an injected test wallet: axe aria-dialog-name and aria-valid-attr-value on the account modal went from 6 occurrences (the modal opened from idle, pending and confirmed states) to 0, and Equal Access aria_id_unique from 3 to 0, with no other finding changed.

Changeset included (patch).

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🦋 Changeset detected

Latest commit: 03de295

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

This PR includes changesets to release 18 packages

Name	Type
@rainbow-me/rainbowkit	Patch
example	Patch
@rainbow-me/rainbow-button	Patch
rainbowkit-next-app	Patch
site	Patch
with-create-react-app	Patch
with-next-app-i18n	Patch
with-next-app	Patch
with-next-custom-button	Patch
with-next-mint-nft	Patch
with-next-siwe-iron-session	Patch
with-next-siwe-next-auth	Patch
with-next-wallet-button	Patch
with-next	Patch
with-react-router	Patch
with-remix	Patch
with-vite	Patch
with-next-rainbow-button	Patch

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