Annotation do not work without setting initial state

[offtherailz]

Description

Creating a new project and adding the plugin, I can not create the annotation(it fails when add geometry).
To make annotations work, i need to set up the initial state.

 "annotations": {
        "config": {
          "multiGeometry": true,
          "validationErrors": {}
        },
        "format": "aeronautical",
        "defaultTextAnnotation": "New"
      },

In case of Bug (otherwise remove this paragraph)

Browser Affected
(use this site: https://www.whatsmybrowser.org/ for non expert users)
any

Steps to reproduce

• localConfig.json should contain "Annotations" plugin, with no annotations initialState set.
• Try to create a new annotation (annotations from burger menu -> click on "+")
• Add a new geometry, of type marker (pencil+ button-> marker)
• click on map

Expected Result

• I see the marker on map

Current Result

• nothing happens
• a row appears in the panel

Other useful information (optional):

[MV88]

alreday backported to 2019.02.xx with this pr #4084