fix poll max chars

app/src/main/java/app/fedilab/android/mastodon/client/entities/api/Instance.java

@@ -169,8 +169,8 @@ public class Instance implements Serializable {
         public int min_expiration;
         @SerializedName("max_options")
         public int max_options = 4;
-        @SerializedName("max_option_chars")
-        public int max_option_chars = 25;
+        @SerializedName("max_characters_per_option")
+        public int max_option_chars = 50;
         @SerializedName("max_expiration")
         public int max_expiration;
     }

app/src/main/java/app/fedilab/android/mastodon/ui/fragment/timeline/FragmentMastodonDirectMessage.java

@@ -319,7 +319,7 @@ public class FragmentMastodonDirectMessage extends Fragment {
         ComposePollBinding composePollBinding = ComposePollBinding.inflate(LayoutInflater.from(requireActivity()), new LinearLayout(requireActivity()), false);
         alertPoll.setView(composePollBinding.getRoot());
         int max_entry = 4;
-        int max_length = 25;
+        int max_length = 50;
         final int[] pollCountItem = {2};
 
         if (instanceInfo != null && instanceInfo.configuration != null && instanceInfo.configuration.pollsConf != null) {