[datagrid] Fix propagation of text content updates

Bug: 402076495
Change-Id: Id73f0b8172b23f7238f99e5193ec067c673fa5d3
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6345655
Commit-Queue: Ken Okada <[email protected]>
Reviewed-by: Ken Okada <[email protected]>
Commit-Queue: Danil Somsikov <[email protected]>
Auto-Submit: Danil Somsikov <[email protected]>

Author: danilsomsikov

front_end/ui/legacy/components/data_grid/DataGridElement.ts

@@ -281,6 +281,9 @@ class DataGridElement extends HTMLElement {
   }
 
   #updateNode(node: Node, attributeName: string|null): void {
+    while (node?.parentNode && !(node instanceof HTMLElement)) {
+      node = node.parentNode;
+    }
     const dataRow = node instanceof HTMLElement ? node.closest('tr') : null;
     const dataGridNode = dataRow ? DataGridElementNode.get(dataRow) : null;
     if (dataGridNode && dataRow) {