DOC: Mgnl 6.2.18 - Support for UI 6 definitions in Blossom's @DialogFactories and @TabFactories

Update the 6.2 Blossom-module.adoc page.

Support for UI 6 definitions in Blossom's @DialogFactories and @TabFactories. \o/

The new usage is a little bit different (no fluent builders), but still quite concise.

The key difference is that @TabFactories may now return a List<EditorPropertyDefinition>—simply add your FieldDefinitions to it—instead of injecting the former TabBuilder. Blossom then generates a form-dialog definition, with a tabbed layout. See the sample below:

@TabFactory("Content")
public List<EditorPropertyDefinition> contentTab() {
    TextFieldDefinition heading = new TextFieldDefinition();
    heading.setName("heading");
    RichTextFieldDefinition body = new RichTextFieldDefinition();
    body.setName("body");
    body.setRequired(true);

    return List.of(heading, body);
}

The update preserves support for multiple tab-factories, @TabOrder, post-processing via @PostCreate (see this other sample), and @DialogFactory methods.