fix(kuma-cp): cancel OnTick when watchdog stopped (backport of #7221)

[kumahq]

Automatic cherry-pick of #7221 for branch release-2.1

Generated by action

cherry-picked commit 8be55a5
⚠️ ⚠️ ⚠️ Conflicts happened when cherry-picking! ⚠️ ⚠️ ⚠️

On branch release-2.1
Your branch is up to date with 'origin/release-2.1'.

You are currently cherry-picking commit 8be55a569.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   pkg/hds/tracker/callbacks.go
	modified:   pkg/hds/tracker/healthcheck_generator.go
	modified:   pkg/hds/tracker/healthcheck_generator_test.go
	modified:   pkg/hds/tracker/reconciler.go
	modified:   pkg/kds/server/components.go
	modified:   pkg/mads/v1/service/components.go
	modified:   pkg/util/watchdog/watchdog.go
	modified:   pkg/util/watchdog/watchdog_test.go
	modified:   pkg/xds/sync/dataplane_watchdog_factory.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   pkg/kds/v2/server/components.go