Backport of update hcl v2.19.0 into v1.6

[teamterraform]

Backport

This PR is auto-generated from #34096 to be assessed for backporting due to the inclusion of the label 1.6-backport.

The below text is copied from the body of the original PR.

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HCL v2.19.0
Enhancements

• ext/dynblock: dynblock.Expand now supports an optional hook for calling applications to check and potentially veto (by returning error diagnostics) particular for_each values. The behavior is unchanged for callers that don't set the new option. (ext/dynblock: Allow callers to veto for_each values hcl#634)

Bugs Fixed

• hclsyntax: Further fixes for treatment of "marked" values in the conditional expression, and better tracking of refined values into the conditional expression results, building on the fixes from v2.18.1. (hclsyntax: conditional refinements of collections must use Range() hcl#633)

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Fixes #34060

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Overview of commits

• 1f27118

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