fix for annoying double-select bug

app.py

@@ -131,10 +131,14 @@ if only_verified_results:
     dataframe = verified_dataframe
 
 query_params = st.experimental_get_query_params()
+if "first_query_params" not in st.session_state:
+    st.session_state.first_query_params = query_params
+first_query_params = st.session_state.first_query_params
+
 default_dataset = "common_voice"
-if "dataset" in query_params:
-    if len(query_params["dataset"]) > 0 and query_params["dataset"][0] in selectable_datasets:
-        default_dataset = query_params["dataset"][0]
+if "dataset" in first_query_params:
+    if len(first_query_params["dataset"]) > 0 and first_query_params["dataset"][0] in selectable_datasets:
+        default_dataset = first_query_params["dataset"][0]
 
 dataset = st.sidebar.selectbox(
     "Dataset",