fix: npe in page.pause() (#1828) #2746

Job	Run time
Java_21 (chromium)	6m 29s
Java_21 (firefox)	13m 40s
stable (windows-latest, chrome)	8m 58s
stable (ubuntu-latest, chrome)	6m 52s
Java_21 (webkit)	9m 11s
stable (windows-latest, msedge)	15m 21s
stable (macos-latest, chrome)	9m 7s
dev (ubuntu-latest, chromium)	6m 37s
dev (windows-latest, webkit)	30m 14s
dev (ubuntu-latest, webkit)	8m 47s
dev (windows-latest, chromium)	6m 38s
dev (ubuntu-latest, firefox)	13m 44s
dev (macos-latest, firefox)	14m 32s
dev (macos-latest, chromium)	6m 8s
dev (windows-latest, firefox)	13m 30s
dev (macos-latest, webkit)	8m 24s
stable (macos-latest, msedge)	25m 4s
	3h 23m 16s

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