[BUG][dart-dio] isEnum is true only for inline enums

[vasilich6107]

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Description

isEnum is true only for inline enums

openapi-generator/modules/openapi-generator/src/main/resources/dart/libraries/dio/serialization/built_value/class_inline_enums.mustache

Line 4 in b3f74c7

If an enum is declared as a definition, isEnum is false and the enum is generated from the

openapi-generator version

latest

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

isEnum should be true for any enum value

[vasilich6107]

@kuhnroyal could you clarify the reason why isEnum is true only in some cases?
#18370 this fix is not properly working

[vasilich6107]

#13880