[Discover-Next][UX] Query editor keyboard actions

[kavilla]

Description

Implement the behavior of keyboard interactions with the query editor. For example, for the default experience (query string input) when the user hits the {enter} key then the query is fired. But the query editor supports multiline'd queries. Currently, pressing {enter} key moves the cursor to the next line. But the learned reaction of being able to press the {enter} key and the request not firing can be unlearned but then the interaction on another page still fires the request on {enter}

Requirements

• UX questions:
  • Are we okay with the behavior in the description (enter firing the request on different apps like dashboards and visualizations, but new lines for query editor)?
  • Explicit list of other keyboard actions?
    • Example from the default experience
    • Any difference in behaviors between the editor and input accounted for
  • Any keyboard interactions for expansion/collapse feature? [Discover-Next][UI] Query editor can be collapsed #7038
• Implement