Introduce new remote flag for storage service write behavior

js/models/conversations.js

@@ -3084,6 +3084,14 @@
     // [X] whitelisted
     // [X] archived
     captureChange() {
+      if (!window.Signal.RemoteConfig.isEnabled('desktop.storageWrite')) {
+        window.log.info(
+          'conversation.captureChange: Returning early; desktop.storageWrite is falsey'
+        );
+
+        return;
+      }
+
       this.set({ needsStorageServiceSync: true });
 
       this.queueJob(() => {

ts/RemoteConfig.ts

@@ -6,6 +6,7 @@ type ConfigKeyType =
   | 'desktop.gv2'
   | 'desktop.cds'
   | 'desktop.storage'
+  | 'desktop.storageWrite'
   | 'desktop.clientExpiration';
 type ConfigValueType = {
   name: ConfigKeyType;

ts/services/storage.ts

@@ -665,6 +665,10 @@ async function processManifest(
 
 export async function runStorageServiceSyncJob(): Promise<void> {
   if (!isEnabled('desktop.storage')) {
+    window.log.info(
+      'storageService.runStorageServiceSyncJob: Not starting desktop.storage is falsey'
+    );
+
     return;
   }
 
@@ -738,6 +742,17 @@ export async function eraseAllStorageServiceState(): Promise<void> {
 
 async function nondebouncedStorageServiceUploadJob(): Promise<void> {
   if (!isEnabled('desktop.storage')) {
+    window.log.info(
+      'storageService.storageServiceUploadJob: Not starting desktop.storage is falsey'
+    );
+
+    return;
+  }
+  if (!isEnabled('desktop.storageWrite')) {
+    window.log.info(
+      'storageService.storageServiceUploadJob: Not starting desktop.storageWrite is falsey'
+    );
+
     return;
   }