fix: correct Collibra relation/attribute type UUIDs and constant names

[bobby-smedley]

Summary

• Fix DefinitionAttributeTypeID: 00000000-0000-0000-0000-000000003008 (does not exist) → 00000000-0000-0000-0000-000000000202 ("Definition" attribute type, verified against DGC API)
• Fix DataAttributeRelID2: cd000000-0000-0000-0000-000000000023 (does not exist) → 00000000-0000-0000-0000-120000000011 (ColumnIsSourceForDataAttribute)
• Rename all constants to match their actual Collibra publicId names:
  • DataAttributeRepresentsMeasureRelID → MeasureIsCalculatedUsingDataElementRelID
  • GenericConnectedAssetRelID → BusinessAssetRepresentsDataAssetRelID
  • ColumnToTableRelID → ColumnIsPartOfTableRelID
  • DataAttributeRelID1 → DataAttributeRepresentsColumnRelID
  • DataAttributeRelID2 → ColumnIsSourceForDataAttributeRelID
• Update all references across tool packages

Verification

All UUIDs verified against the DGC REST API (/rest/2.0/attributeTypes/{id} and /rest/2.0/relationTypes/{id}). The DefinitionAttributeTypeID was additionally tested end-to-end by fetching a Business Term's definition attribute.

Test plan

• Verify get_column_semantics tool returns connected measures and business assets
• Verify get_measure_data tool traces Measure → Data Attribute → Column → Table
• Verify get_table_semantics tool returns semantic hierarchy
• Verify get_business_term_data tool returns physical data assets
• Verify FetchDescription returns definitions for assets that have them

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