Preserve runtime error node IDs from Resolve

[efd6]

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Preserve runtime error node IDs from Resolve

When absoluteAttribute.Resolve() encounters a *types.Err variable value,
return it directly rather than calling Unwrap(). The Unwrap call strips
the Err wrapper and its node ID, causing callers to re-label the error
with the observation site's ID instead of the originating expression's ID.

Additionally, make WrapErr pass through existing *types.Err values rather
than double-wrapping them. This ensures that LabelErrNode sees the
original non-zero node ID and preserves it, regardless of the call site.

Fixes #1191

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[TristonianJones]

/gcbrun

[efd6]

PTAL

[TristonianJones]

/gcbrun