[PM-28252] Add new feature flag for increasing bulk reinvite limit for cloud (#6624)

Author: r-tome

src/Core/Constants.cs

@@ -143,6 +143,7 @@ public static class FeatureFlagKeys
     public const string AccountRecoveryCommand = "pm-25581-prevent-provider-account-recovery";
     public const string BlockClaimedDomainAccountCreation = "pm-28297-block-uninvited-claimed-domain-registration";
     public const string PolicyValidatorsRefactor = "pm-26423-refactor-policy-side-effects";
+    public const string IncreaseBulkReinviteLimitForCloud = "pm-28251-increase-bulk-reinvite-limit-for-cloud";
 
     /* Architecture */
     public const string DesktopMigrationMilestone1 = "desktop-ui-migration-milestone-1";