use fixed-width font for panels showing arbitrary JSON

[darin-reify]

Why
when inspecting flow runs in the ui, the Run Config and Parameters panels hold a lot of useful information. however, these panel uses the same (non-fixed-width) font as the rest of the ui which makes it much harder to parse the information than needs be.

this is especially noticeable when using the ECSRun run-config and supplying a task_definition dict. that dict is a pretty large structure and muddles the screen / information.

What

• panels that display arbitrary JSON data should use a fixed-width font to improve readability

[zhen0]

Thanks for the suggestion - I'm adding the consider for Orion tag as this is feedback we can consider for Prefect 2.0