[Glitch] Fix case-sensitive check for previously used hashtags

Port 28bc6265bf to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/reducers/compose.js

@@ -273,11 +273,12 @@ const ignoreSuggestion = (state, position, token, completion, path) => {
 };
 
 const sortHashtagsByUse = (state, tags) => {
-  const personalHistory = state.get('tagHistory');
+  const personalHistory = state.get('tagHistory').map(tag => tag.toLowerCase());
 
-  return tags.sort((a, b) => {
+  const tagsWithLowercase = tags.map(t => ({ ...t, lowerName: t.name.toLowerCase() }));
-    const usedA = personalHistory.includes(a.name);
+  const sorted = tagsWithLowercase.sort((a, b) => {
-    const usedB = personalHistory.includes(b.name);
+    const usedA = personalHistory.includes(a.lowerName);
+    const usedB = personalHistory.includes(b.lowerName);
 
     if (usedA === usedB) {
       return 0;
@@ -287,6 +288,8 @@ const sortHashtagsByUse = (state, tags) => {
       return 1;
     }
   });
+  sorted.forEach(tag => delete tag.lowerName);
+  return sorted;
 };
 
 const insertEmoji = (state, position, emojiData) => {