chore: udpate uikit 7

[NasgulNexus]

Changes with the transition to UIKit 7:

New appearance of Oneof, RadioButtonGroup has been changed to SegmentedRadioGroup
https://preview.gravity-ui.com/uikit/2030/?path=/docs/components-inputs-segmentedradiogroup--docs

New appearance for checkbox in the disabled state

PasswordInput is now part of UIKit

HelpPopover has been moved to UIKit and is now called HelpMark

Since we no longer use the @gravity-ui/components library, it has been removed

New Popover and its interaction: it now requires a React.ReactElement as a child; otherwise, it won't open. Additional changes:

1. You now need to explicitly specify hasArrow
2. className now applies to the popover modal window
3. contentClassName is no longer available

For TextContent, you now need to explicitly set icon to undefined because within the Alert component, there is a type check for the icon prop

CSS variable changes:

Renaming:

--df-tooltip-container-max-width to --df-popover-item-max-width
--df-tooltip-container-margin-bottom to --df-popover-item-margin-bottom

A new variable has been added: --df-checkbox-margint-start