[BUG][JAVA][NATIVE] useEnumCaseInsensitive option not working for Enum Classes (Works for inner classes)

Description

Changes made for default modelEnum template is missing in the native library. Therefore, fromValue method of enum classes always run as case sensitive even if useEnumCaseInsensitive option is enabled.

Default modelEnum.mustache:
https://github.com/OpenAPITools/openapi-generator/blob/746961d07a9048e4ea6ee09c4ea25100b4def065/modules/openapi-generator/src/main/resources/Java/modelEnum.mustache#L57-L67

Native Library's modelEnum.mustache:
https://github.com/OpenAPITools/openapi-generator/blob/746961d07a9048e4ea6ee09c4ea25100b4def065/modules/openapi-generator/src/main/resources/Java/libraries/native/modelEnum.mustache#L57-L67

openapi-generator version

7.6.0

OpenAPI declaration file content or url

Command line used for generation

Steps to reproduce

Related issues/PRs

Suggest a fix/enhancement

Copy the lines #L57-L67 in modules/openapi-generator/src/main/resources/Java/modelEnum.mustache to lines #L57-L67 in modules/openapi-generator/src/main/resources/Java/libraries/native/modelEnum.mustache

Compare lines 57–67 of modules/openapi-generator/src/main/resources/Java/modelEnum.mustache with the corresponding section in modules/openapi-generator/src/main/resources/Java/libraries/native/modelEnum.mustache. Apply the same template change to the native library and verify that generated enum classes honor useEnumCaseInsensitive in fromValue.