JSON is displayed as a single line in KV editor

**Old UI or New UI**
Consul 1.5.3 using new UI

**Describe the problem you're having**
Imported JSON configuration is displayed as a single line in the code editor making it very hard to read the configuration. Especially when it comes to bigger larger amounts of configuration.


**Describe the solution you'd like**
Either an option to format the config in the UI or automatic formatting when the page is opened. The formatting should display the JSON over multiple lines as shown in the image below.


Start with the Consul new UI KV editor and reproduce the imported JSON example described in the issue. Trace where the editor receives and displays the configuration; done means the JSON is shown across multiple lines in the editor, matching the expected formatting shown in the issue.

Written by the indexing model from the issue text.