• Fix tooltip for Spanish Civil 3D

In AutoCAD/Civil3D, CurrentUICulture.ToString() will return traditional es-ES_tradnl,
instead of plain es-ES. This will fail the finding of xml document later.

This change uses CurrentUICulture.Name instead.
From MS DOC for CultureInfo.Name:

Gets the culture name in the format languagecode2-country/regioncode2.

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Purpose

Cherry-picks #9876

Declarations

Check these if you believe they are true

• The code base is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning, and are documented in the API Changes document.

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