TableOutputComponent: Fix findMatchedEvent row 0 case

Before this change, if a column search filter highlighted entries
including the very first one in the table, then hitting Enter selected
the second highlighted entry, rather than that first one.

Contributes to fixing #859.

Signed-off-by: Marco Miller <marco.miller@ericsson.com>

packages/react-components/src/components/table-output-component.tsx

@@ -674,7 +674,8 @@ export class TableOutputComponent extends AbstractOutputComponent<TableOutputPro
                     // non-contiguous row found, stop searching in cache
                     currRowIndexFound = false;
                 }
-                if (currRowIndexFound && !isFound && rowNode.rowIndex && rowNode.data && rowNode.data['isMatched']) {
+                // only checking 'rowNode.rowIndex' below makes its '=== 0' case false:
+                if (currRowIndexFound && !isFound && (rowNode.rowIndex || rowNode.rowIndex === 0) && rowNode.data && rowNode.data['isMatched']) {
                     this.gridApi?.ensureIndexVisible(rowNode.rowIndex);
                     this.selectStartIndex = this.selectEndIndex = rowNode.rowIndex;
                     if (this.timestampCol) {