Fix remote config for configs with unspecified on-off values

ts/RemoteConfig.ts

@@ -131,7 +131,7 @@ export const _refreshRemoteConfig = async (
   const oldConfig = config;
   config = Array.from(newConfigValues.entries()).reduce(
     (acc, [name, value]) => {
-      const enabled = value !== undefined;
+      const enabled = value !== undefined && value !== 'false';
       const previouslyEnabled: boolean = get(
         oldConfig,
         [name, 'enabled'],

ts/test-node/RemoteConfig_test.ts

@@ -139,6 +139,20 @@ describe('RemoteConfig', () => {
       assert.equal(isEnabled('desktop.internalUser'), true);
     });
 
+    it('is true for true string flag', async () => {
+      await updateRemoteConfig([
+        { name: 'desktop.internalUser', value: 'true' },
+      ]);
+      assert.equal(isEnabled('desktop.internalUser'), true);
+    });
+
+    it('is false for false string flag', async () => {
+      await updateRemoteConfig([
+        { name: 'desktop.internalUser', value: 'false' },
+      ]);
+      assert.equal(isEnabled('desktop.internalUser'), false);
+    });
+
     it('reflects the value of an unknown flag in the config', async () => {
       assert.equal(
         isEnabled('desktop.unknownFlagName' as ConfigKeyType),

ts/textsecure/WebAPI.ts

@@ -700,7 +700,6 @@ const CHAT_CALLS = {
   batchIdentityCheck: 'v1/profile/identity_check/batch',
   boostReceiptCredentials: 'v1/subscription/boost/receipt_credentials',
   challenge: 'v1/challenge',
-  config: 'v1/config',
   configV2: 'v2/config',
   createBoost: 'v1/subscription/boost/create',
   deliveryCert: 'v1/certificate/delivery',