Lack of customization for recordActionField primary recordActionItem

a!recordActionField(
  actions: {
    a!recordActionItem(
      action: 'action_1',
      identifier: ri!identifier
    ),
    a!recordActionItem(
      action: 'action_2',
      identifier: ri!identifier
    ),
    /* this last one should be the primary */
    a!recordActionItem(
      action: 'action_3',
      identifier: ri!identifier
    )
  },
  style: "TOOLBAR_PRIMARY",
  display: "LABEL_AND_ICON",
  align: "END"
)

I have the following code above with the following style "TOOLBAR_PRIMARY". I would like to be able to set which action is the primary one.

I haven't seen such option. It always applies the style to the first one one the left. What if I want the one on the middle to be the primary action? Or the last one on the right to be the primary?

I appreciate any hints on this since then.