[PM-4154] Introduce Bulk Encrypt Service for Faster Unlock Times (#6465)

* Implement multi-worker encryption service

* Fix feature flag being flipped and check for empty input earlier

* Add tests

* Small cleanup

* Remove restricted import

* Rename feature flag

* Refactor to BulkEncryptService

* Rename feature flag

* Fix cipher service spec

* Implement browser bulk encryption service

* Un-deprecate browserbulkencryptservice

* Load browser bulk encrypt service on feature flag asynchronously

* Fix bulk encryption service factories

* Deprecate BrowserMultithreadEncryptServiceImplementation

* Copy tests for browser-bulk-encrypt-service-implementation from browser-multithread-encrypt-service-implementation

* Make sure desktop uses non-bulk fallback during feature rollout

* Rename FallbackBulkEncryptService and fix service dependency issue

* Disable bulk encrypt service on mv3

* Change condition order to avoid expensive api call

* Set default hardware concurrency to 1 if not available

* Make getdecrypteditemfromworker private

* Fix cli build

* Add check for key being null

libs/common/src/enums/feature-flag.enum.ts

@@ -14,6 +14,7 @@ export enum FeatureFlag {
   EnableDeleteProvider = "AC-1218-delete-provider",
   ExtensionRefresh = "extension-refresh",
   RestrictProviderAccess = "restrict-provider-access",
+  PM4154_BulkEncryptionService = "PM-4154-bulk-encryption-service",
   UseTreeWalkerApiForPageDetailsCollection = "use-tree-walker-api-for-page-details-collection",
   EmailVerification = "email-verification",
   InlineMenuFieldQualification = "inline-menu-field-qualification",
@@ -49,6 +50,7 @@ export const DefaultFeatureFlagValue = {
   [FeatureFlag.EnableDeleteProvider]: FALSE,
   [FeatureFlag.ExtensionRefresh]: FALSE,
   [FeatureFlag.RestrictProviderAccess]: FALSE,
+  [FeatureFlag.PM4154_BulkEncryptionService]: FALSE,
   [FeatureFlag.UseTreeWalkerApiForPageDetailsCollection]: FALSE,
   [FeatureFlag.EmailVerification]: FALSE,
   [FeatureFlag.InlineMenuFieldQualification]: FALSE,