[86bzepn0r][dropdown-menu] increased selector specificity for inner shadow in scroll area

[ilyabrower]

Motivation and Context

I've fixed selector specificity for inner shadow in scroll area

How has this been tested?

Manually

Screenshots (if appropriate):

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:

• My code follows the code style of this project.
• I have updated the documentation accordingly or it's not required.
• Unit tests are not broken.
• I have added changelog note to corresponding CHANGELOG.md file with planned publish date.
• I have added new unit tests on added of fixed functionality.

[msereniti]

I feel like that all of that css specificity juggling is very fragile. Can you cover it with a screenshot test?

[ilyabrower]

I feel like that all of that css specificity juggling is very fragile. Can you cover it with a screenshot test?

I've added snapshot test