PM-10560: Adding Cascades back to Notification Center (#4769)

* PM-10560: Adding Cascades back

* PM-10560: Add missing Notification FK with CASCADE

* PM-10560: Delete Notification cascades fix

* PM-10560: Further cascades removal, simplifications

* PM-10560: Cleanup

* PM-10560: Cleanup

* PM-10560: Sql migrations fix

* PM-10560: EF revert

src/Sql/NotificationCenter/dbo/Tables/NotificationStatus.sql

@@ -5,5 +5,11 @@ CREATE TABLE [dbo].[NotificationStatus]
     [ReadDate] DATETIME2 (7) NULL,
     [DeletedDate] DATETIME2 (7) NULL,
     CONSTRAINT [PK_NotificationStatus] PRIMARY KEY CLUSTERED ([NotificationId] ASC, [UserId] ASC),
+    CONSTRAINT [FK_NotificationStatus_Notification] FOREIGN KEY ([NotificationId]) REFERENCES [dbo].[Notification] ([Id]),
     CONSTRAINT [FK_NotificationStatus_User] FOREIGN KEY ([UserId]) REFERENCES [dbo].[User] ([Id])
 );
+
+GO
+CREATE NONCLUSTERED INDEX [IX_NotificationStatus_UserId]
+    ON [dbo].[NotificationStatus]([UserId] ASC);
+

src/Sql/dbo/Stored Procedures/Organization_DeleteById.sql

@@ -119,6 +119,23 @@ BEGIN
     WHERE
         [OrganizationId] = @Id
 
+    -- Delete Notification Status
+    DELETE
+        NS
+    FROM
+        [dbo].[NotificationStatus] NS
+    INNER JOIN
+        [dbo].[Notification] N ON N.[Id] = NS.[NotificationId]
+    WHERE
+        N.[OrganizationId] = @Id
+    
+    -- Delete Notification
+    DELETE
+    FROM
+        [dbo].[Notification]
+    WHERE
+        [OrganizationId] = @Id
+    
     DELETE
     FROM
         [dbo].[Organization]

src/Sql/dbo/Stored Procedures/User_DeleteById.sql

@@ -119,6 +119,20 @@ BEGIN
     WHERE 
         [UserId] = @Id
 
+    -- Delete Notification Status
+    DELETE
+    FROM
+        [dbo].[NotificationStatus]
+    WHERE
+        [UserId] = @Id
+
+    -- Delete Notification
+    DELETE
+    FROM
+        [dbo].[Notification]
+    WHERE
+        [UserId] = @Id
+    
     -- Finally, delete the user
     DELETE
     FROM