[css-tables] Mark sibling cells dirty when a cell is added

third_party/WebKit/LayoutTests/fast/table/border-collapsing/cached-cell-append-expected.txt

 {
+  "name": "Content Root Layer",
   "bounds": [800, 600],
   "children": [
     {
+      "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutTableCell TD",
-          "rect": [63, 8, 60, 54],
+          "rect": [64, 8, 60, 54],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutTable TABLE",
-          "rect": [67, 8, 56, 54],
+          "rect": [67, 8, 57, 54],
           "reason": "incremental"
         },
         {
           "object": "LayoutTable TABLE",
-          "rect": [68, 8, 55, 54],
+          "rect": [68, 8, 56, 54],
           "reason": "incremental"
         },
         {
           "object": "LayoutTableCell TD",
-          "reason": "full"
+          "rect": [63, 10, 4, 50],
+          "reason": "incremental"
         },
         {
           "object": "LayoutTableCell TD",
-          "reason": "full"
+          "rect": [68, 8, 2, 54],
+          "reason": "incremental"
         }
       ]
     }
+  ],
+  "objectPaintInvalidations": [
+    {
+      "object": "LayoutTableCell TD",
+      "reason": "style change"
+    },
+    {
+      "object": "LayoutTableCell TD",
+      "reason": "style change"
+    },
+    {
+      "object": "LayoutTable TABLE",
+      "reason": "incremental"
+    },
+    {
+      "object": "LayoutTableCell TD",
+      "reason": "incremental"
+    },
+    {
+      "object": "LayoutTableCell TD",
+      "reason": "layoutObject insertion"
+    }
   ]
 }