watch: cancel pending restart on shutdown #7204

Job	Run time
Build slim tarball	1m 19s
x86_64-linux: with shared libraries	28m 20s
aarch64-linux: Cache V8 build	19s
x86_64-darwin: with shared libraries	52m 15s
aarch64-darwin: with shared libraries	25m 9s
aarch64-linux: with shared openssl-3.0.19	26m 29s
aarch64-linux: with shared openssl-3.5.5	26m 52s
aarch64-linux: with shared boringssl-0.20260413.0	26m 11s
aarch64-linux: with shared openssl-3.6.1	26m 10s
aarch64-linux: with shared openssl-4.0.0	25m 34s
aarch64-linux: with shared openssl-1.1.1w	26m 26s
	4h 25m 4s

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