Fix CategoryCount with multiple labels if some labels are missing (#1838)

Author: Liraim

src/evidently/metrics/column_statistics.py

@@ -326,7 +326,10 @@ def _calculate_value(self, dataset: Dataset):
                 #  only one boolean label is possible here
                 value = counts[self.metric.categories[0]]  # type: ignore[index]
             else:
-                value = counts.loc[self.metric.categories].sum()  # type: ignore[index]
+                value = 0
+                for cat in self.metric.categories:
+                    if cat in counts:
+                        value += counts[cat]  # type: ignore[index]
         except KeyError:
             value = 0
         total = column.data.count()

ui/html-visual-testing/tests/visual.spec.ts-snapshots.dvc

@@ -1,6 +1,6 @@
 outs:
-- md5: a966532c276e44acff2bf09f06631550.dir
-  size: 7060724
+- md5: 72eb75f3d2e9a5c7c49463f577cc61bf.dir
+  size: 7062684
   nfiles: 32
   hash: md5
   path: visual.spec.ts-snapshots