Fix reverse_proxy claude error (#594)

# 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

src/ts/process/request.ts

@@ -1863,7 +1863,7 @@ export async function requestChatDataMain(arg:requestDataArgument, model:'model'
 
                 if(aiModel === 'reverse_proxy'){
                     finalChat = claudeChat.map((v) => {
-                        if(v.content.length === 0 && v.content[0].type === 'text'){
+                        if(v.content.length > 0 && v.content[0].type === 'text'){
                             return {
                                 role: v.role,
                                 content: v.content[0].text