WPP

Fix nullable warnings and wrongly added using #1334

Job	Run time
build (ubuntu-latest, Release)	1m 34s
build (macos-14, Debug)	1m 10s
build (ubuntu-latest, Debug)	1m 43s
build (macos-14, Release)	1m 29s
build (windows-latest, Release)	2m 14s
build (windows-latest, Debug)	2m 15s
	10m 25s

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