[preact-iso] Support manual URL via <LocationProvider url="/" />

[developit]

/cc @codepunkt

[changeset-bot]

🦋 Changeset detected

Latest commit: ad9e1e6

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

This PR includes changesets to release 1 package

Name	Type
preact-iso	Patch

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[codepunkt]

1. Type addition for router.d.ts:

   interface LocationProviderProps {
       url?: string
   }
   
   export const LocationProvider: FunctionComponent<LocationProviderProps>;

2. useMemo and UPDATE also use global location. This is where usage without location available would error next.

[codepunkt]

@JoviDeCroock but it doesn't help? Confused why this was merged. 🤔