mobile: fix tag suggestions in share widget (#2354)

apps/mobile/share/search.js

@@ -17,23 +17,22 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+import { FlashList } from "@shopify/flash-list";
 import React, { useEffect, useRef, useState } from "react";
 import {
-  ActivityIndicator,
   Platform,
   StatusBar,
   Text,
   TextInput,
   TouchableOpacity,
-  useWindowDimensions,
-  View
+  View,
+  useWindowDimensions
 } from "react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import Icon from "react-native-vector-icons/MaterialCommunityIcons";
 import { db } from "../app/common/database";
 import { getElevation } from "../app/utils";
 import { useShareStore } from "./store";
-import { FlashList } from "@shopify/flash-list";
 
 const ListItem = ({ item, mode, close }) => {
   const colors = useShareStore((state) => state.colors);
@@ -338,7 +337,13 @@ export const Search = ({ close, getKeyboardHeight, quicknote, mode }) => {
           renderItem={renderItem}
           estimatedItemSize={50}
           ListHeaderComponent={
-            searchResults.length === 0 && searchKeyword.current ? (
+            mode === "selectTags" &&
+            (searchResults.length === 0 ||
+              (searchKeyword.current &&
+                searchKeyword.current.length > 0 &&
+                !searchResults.find(
+                  (item) => item.title === searchKeyword.current
+                ))) ? (
               <ListItem
                 item={{
                   type: "tag",