fix: Fix Java type for annotated array parameters (#3797)

This update fixes the GraalVM reachability metadata generation for methods with annotated array parameters, such as `@Nullable String[]`.

Previously, the code computed the fully qualified class name for the parameter using the **raw** type, which retained the annotations (e.g., `@org.jspecify.annotations.Nullable java.lang.String`). This resulted in incorrect metadata that was ignored by GraalVM.

The issue is resolved by transforming the `DeclaredType` into a `TypeElement`, effectively removing any annotations, and then calling `getQualifiedName()` to correctly generate the fully qualified class name without annotations.