fix(grid): apply conditon on condition.logic, not on condition

Author: hanastasov

Diff for: projects/igniteui-angular/src/lib/data-operations/filtering-strategy.spec.ts

@@ -57,6 +57,21 @@ describe('Unit testing FilteringStrategy', () => {
         expect(res).toBeFalsy();
     });
 
+    it ('no error when condition is missing in the filtering expressions tree', () => {
+        const rec = data[0];
+        const expressionTree = new FilteringExpressionsTree(FilteringLogic.Or);
+        expressionTree.filteringOperands = [
+            {
+                conditionName: 'contains',
+                fieldName: 'string',
+                ignoreCase: false,
+                searchVal: 'ROW'
+            }
+        ];
+        const res = fs.matchRecord(rec, expressionTree);
+        expect(res).toBeFalsy();
+    });
+
     it ('tests `findMatch`', () => {
         const rec = data[0];
         const res = fs.findMatchByExpression(rec, {

Diff for: projects/igniteui-angular/src/lib/data-operations/filtering-strategy.ts

@@ -40,7 +40,7 @@ export abstract class BaseFilteringStrategy implements IFilteringStrategy  {
     // protected
     public findMatchByExpression(rec: any, expr: IFilteringExpression, isDate?: boolean, isTime?: boolean, grid?: GridType): boolean {
         const val = this.getFieldValue(rec, expr.fieldName, isDate, isTime, grid);
-        if (expr.condition.logic) {
+        if (expr.condition?.logic) {
             return expr.condition.logic(val, expr.searchVal, expr.ignoreCase);
         }
     }