[UIK-3535][core] update values for lh variables to round them in browsers

[j-mnizhek]

Changelog

@semcore/core

Changed

• Updated the values ​​of variables in the lh group: unitless values ​​are now used instead of percentages.

Motivation and Context

• In Chrome, Mozilla, and Safari, the new values ​​are rounded uniformly, instead of as percentages.
• Updated test story for Typography, added explicitly size prop for 16px text. Without this, some default styles were applied for the 16px text.

How has this been tested?

Manually, with storybook and browsers.

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• Nice improve.

Checklist:

• I have updated the documentation accordingly.
• I have added new tests on added of fixed functionality.