fix(button): change secondary selected colors

[maxshymchuk]

Fixes #3722

Description

The selected state for secondary button returns primary colors instead of secondary colors. Changes:

• color: $theme.colors.buttonPrimaryText => color: $theme.colors.buttonSecondarySelectedText
• backgroundColor: $theme.colors.buttonPrimaryFill => backgroundColor: $theme.colors.buttonSecondarySelectedFill

Scope

Patch: Bug Fix

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Visual changes were detected on this branch. Please review the following PR containing updated snapshots: https://github.com/maxshymchuk/baseweb/pull/1

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[chasestarr]

Thank you for submitting this PR. Since opening, we've updated the source code to typescript. Can you please update the code change?

[chasestarr]

Thank you for submitting this PR. We will not be changing these colors