cannot import remap annotations since they use wildcard import

Bug Report Checklist

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

Description

I had the glorious idea recently to attempt "typed Strings" (an extendable delegate class that just holds one string) - gave it a custom jsonde/serializer so it also works with requests

unfortunately when i try to use it the openapi generator the generator create an @Pattern annotation without a specific import so i cant remap it to my own and that by default only works with String.class

alternatively:
remap via typeMapping (Pattern=my.own.Pattern) also didnt get applied

if im just missing a property to remap annotations that would also be helpful 😅

expected:

import javax.validation.constraints.Pattern;
import javax.validation.constraints.NotNull;
...

actual:
import javax.validation.constraints.*;

openapi-generator version

6.3.0

Steps to reproduce

spec file with pattern

Related issues/PRs

Suggest a fix

Start by reproducing the Java generation case with an OpenAPI spec containing a pattern constraint, then trace how validation annotation imports are collected. Done means the generated output uses explicit imports such as Pattern and NotNull instead of a wildcard, and the reported annotation remapping behavior is addressed or clearly characterized.