[RTE]: Text sticks to the top of the field when pasting a large piece of text

## Description (optional)

Margin of 8px is missing at the top of Rich Text Editor field when pasting a large piece of text.

## Steps to Reproduce

1. Create a large piece of text (>400 words, so that a scrollbar appears). I used text from for test copy and past behavior here: https://www.blindtextgenerator.com/lorem-ipsum
2. Copy it and paste into RTE.

## Actual result

The margin above the text is missing, text sticks to the top of the field.

https://github.com/epam/UUI/assets/130043480/2443ae5f-7b72-4c43-b167-b351ae2eba53

## Expected result

The 8px margin above the first line of the text is displayed.

## Environment

UUI version: 5.6.1
Browser name: Chrome
Operating System: Windows