Revert "fix: CORS errors due to header changes (#342)"

This reverts commit 5c89532.

Author: Zaimwa9

flagsmith-core.ts

@@ -829,6 +829,10 @@ const Flagsmith = class {
             options.headers['Flagsmith-Application-Version'] = this.applicationMetadata.version;
         }
 
+        if (SDK_VERSION) {
+            options.headers['Flagsmith-SDK-user-agent'] = `flagsmith-js-sdk/${SDK_VERSION}`
+        }
+
         if (headers) {
             Object.assign(options.headers, headers);
         }

test/init.test.ts

@@ -292,6 +292,7 @@ describe('Flagsmith.init', () => {
                 headers: expect.objectContaining({
                     'Flagsmith-Application-Name': 'Test App',
                     'Flagsmith-Application-Version': '1.2.3',
+                    'Flagsmith-SDK-user-agent': `flagsmith-js-sdk/${SDK_VERSION}`,
                 }),
             }),
         );

utils/version.ts

@@ -1,2 +1,2 @@
 // Auto-generated by write-version.js
-export const SDK_VERSION = "9.3.2";
+export const SDK_VERSION = "9.3.1";