[FIX] web_pivot_computed_measure: Avoid Infinity errors by comparisons

As with the values that computed measurements can take, comparisons can
also take these values which are formatted by the function
getFormattedVariation. So we extend this method to take infinite values
into account.

web_pivot_computed_measure/static/src/pivot/pivot_renderer.esm.js

@@ -12,4 +12,10 @@ patch(PivotRenderer.prototype, "web_pivot_computed_measure.PivotRenderer", {
         }
         return this._super(...arguments);
     },
+    getFormattedVariation(cell) {
+        if (Math.abs(cell.value) === Infinity) {
+            return "-";
+        }
+        return this._super(...arguments);
+    },
 });