[Glitch] Change how CDN_HOST is passed down to make assets build reproducible

Port 4c45b43cb8 to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/util/emoji/index.js

@@ -1,11 +1,10 @@
 import { autoPlayGif, useSystemEmojiFont } from 'flavours/glitch/util/initial_state';
 import unicodeMapping from './emoji_unicode_mapping_light';
+import { assetHost } from 'flavours/glitch/util/config';
 import Trie from 'substring-trie';
 
 const trie = new Trie(Object.keys(unicodeMapping));
 
-const assetHost = process.env.CDN_HOST || '';
-
 // Convert to file names from emojis. (For different variation selector emojis)
 const emojiFilenames = (emojis) => {
   return emojis.map(v => unicodeMapping[v].filename);