incorrect generic param for multi interfaces

[dino-proj]

bug

interface One

public interface ListControllerBase<S extends Service<?, ?>, Vo,  SRC extends CustomQuery> {

  // define an operation
  @Operation(name="list")
  @PostMapping("list")
  default Response<Vo> list(@RequestBody PostBody<SRC> req) {
    // some code
  }
}

interface Two

public interface ExistsControllerBase<S extends Service<?, ?>, EQUERY extends CustomQuery> {

  // define another operation
  @Operation(name="exist")
  @PostMapping("exist")
  default Response<Boolean> exist(@RequestBody PostBody<EQUERY> req) {
    // some code
  }

}

inherit operations from those interfaces defined above

@RestController
@RequestMapping("/v1/{tenant_id:[0-9A-Z]+}/user")
public class UserAdminController implements 
    ListControllerBase<AdminUserService, AdminUserVo, AdminUserSearch>,
    ExistsControllerBase<AdminUserService, UserExistsQuery> {
    // some code
}

the "requestBody" in "/v1/{tenant_id}/user/exist" path get incorrect schema:

"schema": {
   "$ref": "#/components/schemas/PostBodyCustomQuery"
}

the correct schema should be:

"schema": {
   "$ref": "#/components/schemas/PostBodyUserExistsQuery"
}

PostBodyCustomQuery ---> PostBodyUserExistsQuery

fix hint

in file: springdoc-openapi-common/src/main/java/org/springdoc/core/ReturnTypeParser.java

//this method
static ResolvableType resolveVariable(TypeVariable<?> typeVariable, ResolvableType contextType) {

//...
}

pull request: at #1684