Make interpolation dispatch on result type#9626
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String interpolation now checks as result-owned static dispatch, so unsuffixed interpolations constrain the expression result with from_interpolation and suffixed interpolations call the suffix type's associated function directly. This lets types like Regex return Try from their own interpolation verifier while Try forwards interpolation dispatch to its ok type. The change also makes from_quote accept Str instead of List(U8), removes the old interpolation side table, and updates snapshots, design notes, and serialization coverage for the new CIR shape.