Important

This PR introduces isFixedPosition to mark columns as unmovable, updating column definitions and behavior across multiple components.

• Behavior:
  • Introduces isFixedPosition property in types.ts to mark columns as unmovable.
  • Updates ColumnVisibilityListItem in data-table-column-visibility-filter.tsx to disable reordering and hiding for fixed columns.
  • Prevents reordering of fixed columns in DataTableColumnVisibilityFilter.
• Column Definitions:
  • Replaces isPinned with isFixedPosition in score-configs.tsx, sessions.tsx, traces.tsx, AnnotationQueueItemsTable.tsx, AnnotationQueuesTable.tsx, DatasetItemsTable.tsx, DatasetRunAggregateColumnHelpers.tsx, DatasetRunsTable.tsx, DatasetsTable.tsx.
• Misc:
  • Updates TableSelectionManager.tsx to include isFixedPosition in selection column.

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