Introduce custom filter row cell templates for date and numeric columns in CatalogsGrid and MassDataGrid. Users can now select a filter operator (e.g., =, <, >, <=, >=) alongside the filter value for columns like AddedWhen, ChangedWhen, and Amount. Updated filter criteria logic to support these operators using DevExpress expressions. Added new CSS for filter row alignment and appearance. Removed obsolete methods and improved layout logic. This enhances filtering flexibility and user experience in both grids.
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