[Fixes #14701] Thesaurus keyword autocomplete does not work

[etj]

Fixes #14701

Checklist

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[Copilot]

Copilot review overview

🟡 Changes recommended

Multiple matching translations inflate resource counts and can alter result ordering.

Review effort: Balanced
Findings: 1

Open (1)

• Avoid duplicate resource counts from matching translations · New

What changed in this PR

Addresses #14701 by correcting localized-label lookup for thesaurus keyword autocomplete in catalog filters.

Changes:

• Searches related keyword labels.
• Adds regression tests for matching and nonmatching searches.

File	Description
geonode/​facets/​tests.py	Tests keyword filtering results.
geonode/​facets/​providers/​thesaurus.py	Corrects the label lookup path.

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