Render Pipeline Converter selected asset counter reports one fewer item when using manual selection

Unity: Graphics Tools

6.2.X

6.1.X

6000.1.0a6 onwards

6.0.X

6000.0.29f1 onwards

Closing, it's enough that the backport was verified on 6.1

Steps to reproduce:

Open the attached project
Open the Render Pipeline Converter window via Window -> Rendering -> Render Pipeline Converter
Initialize and open Material converter
Start manually selecting/deselecting materials
Observe selected items counter

Actual results: The selected items counter is off by one

Expected results: The selected items counter accurately displays the total number of selected assets

Reproducible with versions: 6000.0.29f1, 6000.0.43f1, 6000.1.0b11. 6000.2.0a7

Not reproducible with versions: 2022.3.60f1, 6000.0.28f1

Tested on (OS): macOS 15.3.2