fix: stop and delete cron immediately on deletion of a process

[bvsubhash]

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Deprecations?	no
Tests pass?	yes
Fixed tickets	#4485
License	MIT

Solves two problems:

1. Stops and deletes the cron job during the process deletion itself. Soft reload won't be called even in absence of process.
2. Doesn't restart wrong process in the case where if new process gets spun up and gets same process id assigned to it as well