[BUG][JAVA] SpringCodegen (<library>spring-boot</library>) and BeanValidation for type: string and format: email does not work on version 6.0.1

[JiyangWuUSB]

Bug Report Checklist

• [x] Have you provided a full/minimal spec to reproduce the issue?
• [x] Have you validated the input using an OpenAPI validator (example)?
• [x] Have you tested with the latest master to confirm the issue still exists?
• [x] Have you searched for related issues/PRs?
• [x] What's the actual output vs expected output?
• [ ] [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

We have a property with type: string and format: email and we use Bean Validation for spring-boot.

  properties:
    email:
      type: string
      minLength: 1
      maxLength: 6
      format: email

Using such validations: <useBeanValidation>true</useBeanValidation> <performBeanValidation>true</performBeanValidation>

When we call this: mvn -Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true clean install

We got compile error: Email is ambiguous [ERROR] both class org.hibernate.validator.constraints.Email in org.hibernate.validator.constraints and class javax.validation.constraints.Email in javax.validation.constraints match

while the expected output is: builds and runs successfully

A previous issue addressed the same error [BUG][JAVA] SpringCodegen (spring-boot) and BeanValidation for type: string and format: email does not work #4786

openapi-generator version

6.0.1

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

mvn -Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true clean install

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/issues/4786

Suggest a fix

Using version 5.3.1 and 5.4.0 does not cause this error, but 6.0.1 creates this error. If we set <performBeanValidation> from true to false, the error is gone. If we comment out the line format: email, the error is gone. But we do now know what are the potential downsides of the two methods mentioned above