Autoresize markdown preview
This MR is a completion of ~"Community Contribution" !7439 (closed)
What does this MR do?
Restores markdown textarea height when preview and write tabs are changed.
Are there points in the code the reviewer needs to double check?
No.
Why was this MR needed?
Because when changing tabs textarea becomes smaller
Screenshots (if relevant)
Before
After
Does this MR meet the acceptance criteria?
Changelog entry added Documentation created/updated API support added - Tests
Added for this feature/bug All builds are passing Conform by the merge request performance guides Conform by the style guides Branch has no merge conflicts with master(if it does - rebase it please)Squashed related commits together What are the relevant issue numbers?
