fix(intersect): do not fail on looseObject with pipe

[KubaJastrz]

Fixes #1147

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
valibot	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 12, 2025 8:05am

[KubaJastrz]

I'm actually not sure what is the best course of action here.

I originally wanted to change the schema from looseObject to object but this doesn't seem possible, because we'd have to create a new schema and it would require importing object into intersect.
https://github.com/fabian-hiller/valibot/blob/bc8463c0c5344bc3e21757715b90b67a9533af63/library/src/schemas/intersect/intersect.ts#L108

The other option was to only replace [~run] but it kind of has the same problem.

I'm thinking about stripping unknown entries from value, in case the schema type is looseObject, but how would you bring those keys back? What if one of these keys is actually transformed by another schema?
https://github.com/fabian-hiller/valibot/blob/bc8463c0c5344bc3e21757715b90b67a9533af63/library/src/schemas/intersect/intersect.ts#L134-L138