refactor(react): alias WagmiProviderProps to HydrateProps

[slemchik03]

What

• Alias WagmiProviderProps = HydrateProps in packages/react/src/context.ts.
  The two had identical shapes already and Hydrate is the actual consumer of
  every field, so the previous hand-maintained duplicate just risked drift on
  every future addition.
• Drop the redundant | undefined on the optional fields of HydrateProps
  (initialState, reconnectOnMount).
• Minor cleanup: use named PropsWithChildren import, remove the
  unnecessary props = { value: config } local.

Why

Adding a new option to Hydrate previously required editing two structurally
identical types with nothing enforcing that they stay in sync. Aliasing makes
that class of bug impossible.

Test

• No behavioral change; relying on the existing context.test.tsx for
  coverage.

[changeset-bot]

🦋 Changeset detected

Latest commit: 669e5f7

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

This PR includes changesets to release 1 package

Name	Type
wagmi	Patch

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