Pass form display mode to contextual edit link

Problem/Motivation

For some projects we have multiple from view modes for the paragraphs.
For example a basic view mode that has some fields disabled from the form display.
When you the form display mode is set something other than the default, the contextual links always the the default form display mode.

Proposed resolution

Take the form display mode into account by passing it in the route when using the contextual edit links.