Fix border painting with TableRow

@@ -5,6 +5,7 @@
 - Fix Checkbox Widget
 - Fix SVG colors with percent
 - Fix TextField Widget
+- Fix border painting with TableRow
 
 ## 3.0.0-nullsafety.1
 

@@ -603,11 +603,16 @@ class Table extends Widget implements SpanningWidget {
         continue;
       }
 
-      final child = row.children.first;
       if (row.decoration != null) {
+        var y = double.infinity;
+        var h = 0.0;
+        for (var child in row.children) {
+          y = math.min(y, child.box!.y);
+          h = math.max(h, child.box!.height);
+        }
         row.decoration!.paint(
           context,
-          PdfRect(0, child.box!.y, box!.width, child.box!.height),
+          PdfRect(0, y, box!.width, h),
           PaintPhase.background,
         );
       }
@@ -632,11 +637,16 @@ class Table extends Widget implements SpanningWidget {
         continue;
       }
 
-      final child = row.children.first;
       if (row.decoration != null) {
+        var y = double.infinity;
+        var h = 0.0;
+        for (var child in row.children) {
+          y = math.min(y, child.box!.y);
+          h = math.max(h, child.box!.height);
+        }
         row.decoration!.paint(
           context,
-          PdfRect(0, child.box!.y, box!.width, child.box!.height),
+          PdfRect(0, y, box!.width, h),
           PaintPhase.foreground,
         );
       }