ENG-10464.

I changed the approach to update the column to be a standard column instead of generated. I also don't think it is worth updating Message.h entity as this value is not needed at the application level, so I put exactly the same code while inserting to compute target_message column.

Depends on D14835

Tests from D14835 to make sure it still works as previously

I also tested migration, did the following on native and web:

1. Send some messages
2. Pick one message A and perform operations that have to do anything with targetMessageID (reaction, edit, pin, sidebar creation, and deleting)
3. Run the following code with A's identifier:

const result = await getConfig().sqliteAPI.getRelatedMessages(
      '7A8BC7B3-BBBE-4980-8737-E3E67A26FBD2|118145',
    );
    console.log(result.map(msg => msg.id));
    console.log(JSON.stringify(result));

4. Store the result somewhere
5. Patch this code
6. Check if COMM: migration 55 succeeded. is logged
7. Perform step 3 again and check if results are exactly the same