Fix trailing comma in the minimized snapshot regression data

The hand-minimized latest.verified.txt left a trailing comma after LexemeForm, which strict deserialization (CanDeserializeLatestRegressionData) rejects and RegressionDataUpToDate flagged. Drop it; data is otherwise unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: myieye

backend/FwLite/LcmCrdt.Tests/Data/SnapshotDeserializationRegressionData.latest.verified.txt

@@ -424,7 +424,7 @@
       "Id": "84bb5f48-b2a9-d0c8-85ee-aec9203830ee",
       "DeletedAt": null,
       "LexemeForm": {
-        "dkk": "Product",
+        "dkk": "Product"
       },
       "CitationForm": {},
       "LiteralMeaning": {},