fix: prevent duplicate keys in filter options (#2640)

Co-authored-by: sadaf895 <116058905+sadaf895@users.noreply.github.com>

src/app/core/filter/filters/filters.ts

@@ -78,13 +78,18 @@ export class SelectableFilter<T extends Entity> extends Filter<T> {
     valuesToMatchAsOptions: (string | number)[],
     attributeName: string,
   ): FilterSelectionOption<T>[] {
-    return valuesToMatchAsOptions
-      .filter((k) => !!k)
-      .map((k) => ({
-        key: k.toString().toLowerCase(),
-        label: k.toString(),
-        filter: { [attributeName]: k } as DataFilter<T>,
-      }));
+    let keys = new Set();
+    return (
+      valuesToMatchAsOptions
+        .filter((k) => !!k)
+        .map((k) => ({
+          key: k.toString().toLowerCase(),
+          label: k.toString(),
+          filter: { [attributeName]: k } as DataFilter<T>,
+        }))
+        // remove duplicates:
+        .filter((value) => !keys.has(value.key) && keys.add(value.key))
+    );
   }
 
   /**