debugger: defer probe pause handling until startup #8004

Job	Run time
github.event_name == 'workflow_dispatch' && 'Skipped job' \|\| 'Build slim tarball'	0s
aarch64-linux: Cache V8 build	0s
aarch64-linux: with shared ${{ matrix.openssl.name }}	0s
${{ matrix.system }}: with shared libraries	-6s
	-6s

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