Fix progress message when batch updating

The numbers only should change if you create or update content while the batch is in progress.

>  [notice] Truncated the entity usage table
>  [notice] Created the entity usage bulk table
>  [notice] Updating entity usage for block_content: 8 of 8
>  [notice] Updating entity usage for node: 200 of 306574
>  [notice] Updating entity usage for node: 400 of 306574
>  [notice] Updating entity usage for node: 600 of 306574
>  [notice] Updating entity usage for node: 800 of 306574
>  [notice] Updating entity usage for node: 1000 of 306574
>  [notice] Updating entity usage for node: 1200 of 306574
>  [notice] Updating entity usage for node: 1400 of 306574
>  [notice] Updating entity usage for node: 1600 of 306574
>  [notice] Updating entity usage for node: 1800 of 306574
>  [notice] Updating entity usage for node: 2000 of 306574
>  [notice] Updating entity usage for node: 2200 of 306574
>  [notice] Updating entity usage for node: 2400 of 306574

Is what I'm seeing when on the latest dev version of entity usage.

Yeah I was testing through the UI, and admittedly my environment might have been polluted by different testing in different branches, stopping, resuming, etc. Paragraph total numbers were still increasing as the batch progressed, for some reason.
I nuked everything, and in a fresh install, I can no longer reproduce, so for now I'm blaming my testing which probably wasn't accurate enough.
Thanks for checking!