Fixed the 'failed to fetch', 'Decoding failed' errors occurring in some environments in NodeJS (#348)

# PR Checklist
- [ ] Did you check if it works normally in all models? *ignore this
when it dosen't uses models*
- [ ] Did you check if it works normally in all of web, local and node
hosted versions? if it dosen't, did you blocked it in those versions?
- [ ] Did you added a type def?

# Description
Fixed a bug caused by the "Content-Encoding" header returned from the
server in some environments in the Risu environment of the NodeJS
server.
In reality, the server does not return compressed data, but the issue
arises from sending that header.

server/node/server.cjs

@@ -69,6 +69,7 @@ const reverseProxyFunc = async (req, res, next) => {
         head.delete('content-security-policy-report-only');
         head.delete('clear-site-data');
         head.delete('Cache-Control');
+        head.delete('Content-Encoding');
         const headObj = {};
         for (let [k, v] of head) {
             headObj[k] = v;