feat: resolve account via getConnectorClient in prepareTransactionRequest

[jxom]

Summary

prepareTransactionRequest now resolves the account via getConnectorClient when no account is provided. This lets connectors that implement getClient (e.g. webAuthn) supply a local signing account instead of falling back to a json-rpc account derived from the connection's address.

Also updated the webAuthn connector's getClient to return a signable account via provider.getAccount({ signable: true }).

Why

Previously prepareTransactionRequest used getConnection(config).address for the account, which gave a plain address. When the underlying viem action needed a local Account (e.g. for tempo feePayer/keyAuthorization flows), the call chain ended up with a json-rpc account, breaking signing flows that depend on the connector's local account.

Changes

• packages/core/src/actions/prepareTransactionRequest.ts: resolve account via getConnectorClient(config, { assertChainId: false, chainId, account }) when none is supplied.
• packages/core/src/tempo/Connectors.ts: webAuthn connector getClient now passes { signable: true } to provider.getAccount so the returned client carries a signable Account.

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🦋 Changeset detected

Latest commit: abad939

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

This PR includes changesets to release 5 packages

Name	Type
@wagmi/core	Patch
@wagmi/connectors	Patch
wagmi	Patch
@wagmi/solid	Patch
@wagmi/vue	Patch

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commit: a17d762