Add context to reconciler event handlers

[killianmuldoon]

With the release of the next version of controller runtime event handlers will be able to take a real context - kubernetes-sigs/controller-runtime#2139.

Currently our reconciler event handlers - e.g. mapping functions for Watches - are using context.TODO(). With the next release of Controller Runtime we can (and should) replace them with real context objects.

/kind cleanup

[killianmuldoon]

/triage accepted

[sbueringer]

Thx for opening an issue. I'll add a sub-task in my umbrella issue.
It's currently focused on CR v0.14 but I'm already collection things for v0.15 there and will split it up soon.

(xref: #7925)

[sbueringer]

/close

[k8s-ci-robot]

@sbueringer: Closing this issue.

In response to this:

/close

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