code: func exprIsNativeQuotedString(expr hcl.Expression) bool {
  	_, ok := expr.(*hclsyntax.TemplateExpr)
  	return ok
  }
docs: // exprIsNativeQuotedString determines whether the given expression looks like
  // it's a quoted string in the HCL native syntax.
  //
  // This should be used sparingly only for situations where our legacy HCL
  // decoding would've expected a keyword or reference in quotes but our new
  // decoding expects the keyword or reference to be provided directly as
  // an identifier-based expression.