As a wikidata editor,
I want to be able to define the snak type (custom value / unknown value / no value) while editing a statement on mobile
So that the statement can be more precise

Figma: https://www.figma.com/design/RtMDwH7sMF5IPRJvyyZPv4/Mobile-editing-experience?node-id=2255-40178&t=C9HTDU2XkF8Mdz6A-1

• snak icon (not on codex) is inserted in menu button component
• all 3 choices are displayed in the dropdown and the currently selected choice is highlighted
• per default the option "custom value" is selected
• no value and unknown value, if selected, are displayed on the edit screen as only text, replacing the input field that is there for custum value
  • The text is displayed in Inter, medium Italic, 18px (For this font style there are no tokens - has to be implemented as a snowflake)
• to save changes in snak type, user needs to publish

a/c

• the snak type field matches the figma design (visually and user flow)
• the snak type field can be edited
• the snak type field can be saved
• tests are updated and/or created

Note:

• the snak burger icon should be the same one used on desktop where the top part if filled in (even if figma design indicates the middle section should be filled in).
• snak type UX for on display pulled out to T404685