fix: prefix route pathname with hash when using resolve with hash routing enabled

[teemingc]

fixes #14785

This PR changes the client-side resolve implementation to take into account the hash router setting. As a result, it'll add a hash so you get a route such as /base#/my-route which is what you want when hash routing is enabled.

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🦋 Changeset detected

Latest commit: 4318d08

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

This PR includes changesets to release 1 package

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@sveltejs/kit	Patch

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[dummdidumm]

thank you!