Rename constants

Summary: After the move, let's rename the constants to make them match our code standards.

Reviewed By: aigoncharov

Differential Revision: D51307087

fbshipit-source-id: 4e44e956fd88abd3e8359fe94fa4e31d17f61a55

desktop/flipper-ui-browser/src/global.tsx

@@ -17,11 +17,11 @@ declare global {
       theme: 'light' | 'dark' | 'system';
       entryPoint: string;
       debug: boolean;
-      GRAPH_SECRET: string;
-      FLIPPER_APP_VERSION: string;
-      FLIPPER_SESSION_ID: string;
-      FLIPPER_UNIXNAME: string;
-      FLIPPER_AUTH_TOKEN: string;
+      graphSecret: string;
+      appVersion: string;
+      sessionId: string;
+      unixname: string;
+      authToken: string;
     };
 
     flipperShowMessage?(message: {title?: string; detail?: string}): void;

desktop/flipper-ui-browser/src/index.tsx

@@ -56,7 +56,7 @@ async function start() {
     let token = providerParams.get('token');
     if (!token) {
       console.info('[flipper-client][ui-browser] Get token from HTML instead');
-      token = window.flipperConfig.FLIPPER_AUTH_TOKEN;
+      token = window.flipperConfig.authToken;
       if (!token || token === 'FLIPPER_AUTH_TOKEN_REPLACE_ME') {
         console.warn(
           '[flipper-client][ui-browser] Failed to get token from HTML',