fix: put space after annotation in UnannClassTypes

[clementdessoude]

What changed with this PR:

Example

    // Input
    SomeClass.@Valid SomeInnerClass someInnerClass = someClass.getInteractions().get(0);

    void process(
        Map.@NonNull Entry<String, SkeletonConfiguration> entry,
        @NonNull Map<String, Object> context
    ) {}


  // Output
  SomeClass.@Valid SomeInnerClass someInnerClass = someClass
    .getInteractions()
    .get(0);

  void process(
    Map.@NonNull Entry<String, SkeletonConfiguration> entry,
    @NonNull Map<String, Object> context
  ) {}

Relative issues or prs:

Fix #453
Fix #444