Cloud File Browser in write - File name input and OK button

[farmaazon]

The file name should be provided in the input field under the file tree.

Clicking on file should put its name to the input (without accepting).

The accepted name is just added to the path of the displayed content.

[farmaazon]

Refinement notes:

• The click-off should not accept any path/partially written name
• The widget should keep the state of what was shown/written between opening and closing (just the local UI state, to keep things simple).