fix for #736 Implement missing Modify event on the porch Repo Custom Resource

[mansoor17syed]

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[nephio-prow]

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[mansoor17syed]

Hi Team,

Based on the comments and changes here nephio-project/nephio#736 , I understand that we are not returning anything.
Could you clarify if the expectation is to simply fix this or to add changes that handle the update action for a CR?

Either way, I have raised an MR to address this by just returning it. I'm not entirely sure how effective this approach is, so I would appreciate it if you could review and share your feedback.

#167

nephio-project/nephio#736 (comment)