fix: Table overflow button has lower priority than grid tokens (deeph…

…aven#1510)

* The mouse handler for the table "view full contents" button was called
after the mousehandler for cell tokens. This caused links inside the
cell to open if the cell overflow button overlapped with a link inside
the cell underneath it.
* Priority for GridTokenMouseHandler changed to be after the
CellOverflowMouseHandler.

* Fixes deephaven#1480

packages/grid/src/Grid.tsx

@@ -383,7 +383,7 @@ class Grid extends PureComponent<GridProps, GridState> {
       new GridHorizontalScrollBarMouseHandler(600),
       new GridScrollBarCornerMouseHandler(700),
       new GridRowTreeMouseHandler(800),
-      new GridTokenMouseHandler(825),
+      new GridTokenMouseHandler(875),
       new GridSelectionMouseHandler(900),
     ];