refactor: switch from Fetch API to Axios (#1520)

* refactor: switch from Fetch API to Axios

* fix: remove unwanted changes

* fix: rewrite error handling for Axios and remove IPv4 first setting

* style: run prettier

* style: run prettier

* fix: add back custom proxy agent

* fix: add back custom proxy agent

* fix: correct rebase issue

* fix: resolve review comments

server/lib/settings/index.ts

@@ -136,7 +136,6 @@ export interface MainSettings {
 
 export interface NetworkSettings {
   csrfProtection: boolean;
-  forceIpv4First: boolean;
   trustProxy: boolean;
   proxy: ProxySettings;
 }
@@ -510,7 +509,6 @@ class Settings {
       network: {
         csrfProtection: false,
         trustProxy: false,
-        forceIpv4First: false,
         proxy: {
           enabled: false,
           hostname: '',