feat(ack): Do not call isUpToDate if resource is deleted

[MisterMX]

Description of your changes

Modifies the ACK controller template to only call isUpToDate if not meta.WasDeleted(cr). This may safe some time and unnecessary AWS calls.

Only affects controllers that are generated with ACK.

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

n.a.

[chlunde]

have you done any manual testing? I think this looks sane, but it is a type of change that could have unintended consequences

[MisterMX]

have you done any manual testing? I think this looks sane, but it is a type of change that could have unintended consequences

I only tested this once with rds.DBInstance to check whether the implementation works fine. I did not test the other resources. However, I looked through all isUpToDate functions to see if there is something umcommon (like anything besides read operations) but that does not seem to be the case.