fix: add so that the type annotation is considered again if kotlin is not present

[Mattias-Sehlstedt]

Fixes #3213

The change in 0ed32af#diff-be80ed57071d5a58204a5cc398c2284ace48ff3e1c355f961e0fe9fcde987f94L372 from

(... && methodParameter.getParameterType().getAnnotation(io.swagger.v3.oas.annotations.media.Schema.class) == null) {

to

(... && Arrays.stream(mergedAnnotations)
    .noneMatch(a -> a.annotationType() == io.swagger.v3.oas.annotations.media.Schema.class)) {

Accidentally dropped the parameter type annotations when not using Kotlin (previously checked with methodParameter.getParameterType()). This PR reintroduce so that those annotations are also checked and considered again.