[FIX] web: fix kanban progressbar active filter

When the user clicks on a color in the progress bar, it is supposed
to highlight the column in this color and the records that correspond
to this color. This works perfectly. However, when all the records
are moved (or their color is changed), the filter was staying active,
while it should not be active anymore, since basically the user could
not have clicked on the color in the progressbar in the current state
of the kanban view since no records are in this state anymore.

addons/web/static/src/js/views/kanban/kanban_column_progressbar.js

@@ -89,7 +89,7 @@ var KanbanColumnProgressBar = Widget.extend({
         var subgroupCounts = {};
         _.each(self.colors, function (val, key) {
             var subgroupCount = columnState.progressBarValues.counts[key] || 0;
-            if (self.activeFilter === val && subgroupCount === 0) {
+            if (self.activeFilter === key && subgroupCount === 0) {
                 self.activeFilter = false;
             }
             subgroupCounts[key] = subgroupCount;