Fixed: FileManager and FileUploader will render a placeholder tag along with the script tag.
We need a tag other than script tag for the component even if we render DOM on the client side.
For example, Kendo UI Window, removes/moves script tags from content html so component is rendered to wrong place
and not inside the window.

Kendo UI Window has this code which caused the issue:
// remove script blocks to prevent double-execution
element.find("script").filter(executableScript).remove();

Improved: FileManager and FileUploader will now be resized automatically when the parent DOM element resizes via using
ResizeObserver in supported browsers. This espacially useful when component width or height is given in percentage and not in pixels.
For example, when you put FileManager or FileUploader inside Kendo UI Window, they will be resized when the window is maximized.