Right now when a presentation receives GLMPresentationUpdated it does not update its
own actions.
For example bellow is some code to see this behaviour.
When the action from the composite presentation is triggered it updates the action
from the contained presentations but not its action.

Also if there is just one presentation in the composite then, due to how a composite
with one presentation is implemented, it won't update any action.

|browser|

browser := GLMTabulator new.
browser row: #aRow.

browser transmit to: #aRow; andShow: [ :composite |
    composite
        title: 'Composite';
        updateOn: Announcement from: [ browser announcer ]; 
        dynamicActions: [ :list || actions |
            actions := OrderedCollection new.
            actions add: 
                ((GLMGenericAction new) 
                    action: [ :presentation :model | browser announce: Announcement]; 
                    icon: GLMUIThemeExtraIcons glamorousAdd;
                    title: DateAndTime now asString;
                    yourself).
                actions
                ].

    composite list
        title: 'List 1';
        updateOn: Announcement from: [ browser announcer ]; 
        dynamicActions: [ :list || actions |
            actions := OrderedCollection new.
            actions add: 
                ((GLMGenericAction new) 
                    action: [ :presentation :model | browser announce: Announcement]; 
                    icon: GLMUIThemeExtraIcons glamorousAdd;
                    title: DateAndTime now asString;
                    yourself).
                actions
                ].
    composite list
        title: 'List 2'].

browser openOn: (1 to: 10)