chore(codegen): normalize enum generation

[kuhe]

Issue

n/a

Description

Removes the AWS codegen customization that stripped names from a list of older enums.

Context

The justification for the customization no longer applies in the current state of the codegen application.

Strips enum names from enums that GA'd without them.

A number of enums had names back-filled after GA. Since the type generated would change,
this is backwards-incompatible. This integration ensures that clients generated
preserve backwards-compatibility by stripping names from enums that were known to have
launched without them.

The only enums affected were those in client-accessanalyzer because they were the only string+EnumTrait enums. The others were all enum shapes to begin with, leaving no codegen diff.

Further, the change is in fact entirely backwards compatible under our new enum scheme, and it has been years since we changed from TS enums to const objects w/ type overloads.

The type that is now exported is identical to the old exported type, and in addition an enum object is now exported, making these enums consistent with all our other enums by having a runtime representation.

• I visually inspected all the enums and their new type values are identical to their old type values.

Testing

CI