Reduce default limit back to 15

The feeling of scrolling was nice but a page size of 50
makes the main page a bit slower which isn't worth it.

SetList.tsx

@@ -148,7 +148,7 @@ export default function SetList() {
         style={{ flex: 1 }}
         renderItem={renderItem}
         onEndReached={next}
-        onEndReachedThreshold={0.99}
+        onEndReachedThreshold={0.5}
         refreshing={refreshing}
         keyExtractor={(set) => set.id?.toString()}
         onRefresh={() => {

constants.ts

@@ -3,4 +3,4 @@ export const PADDING = 10;
 export const ITEM_PADDING = 8;
 export const DARK_RIPPLE = "#444444";
 export const LIGHT_RIPPLE = "#c2c2c2";
-export const LIMIT = 50;
+export const LIMIT = 15;