Context metadata adjusted for the transformed datetime sdtype

[lajohn4747]

resolves #1485
CU-85ztdkk6d

Since this datetime is being read incorrectly to the context model there are were a couple approaches:

• Do not transform the column before it gets to context synthesizer (unfortunately this causes errors when trying to map the context synthesizer values in the par model)
• Update transformers in the context model (cannot easily swap the transformers before validation occurs)
• Change the type of the context metadata to match

Went with last one because the context metadata is a deep copy of the metadata and is not surfaced/used to any other functionality besides fitting the context model.

[sdv-team]

Task linked: CU-85ztdkk6d SDV - In PARSynthesizer I cannot pass in datetime context (TypeError during sampling) #1485

[amontanez24]

LGTM!