fix: color swatches to show colors with gradients

[cuserox]

Why does this PR exist?

Closes #2951

Colors with semicolons were not applying to the color swatches due to an error when the DOM CSS styling was attempting to be applied

What does this pull request do?

• Adds a small utility that strips a semicolon from a string
• Uses the utility for correct styling in search and mentions

Testing this change

1. Create a color token as a gradient (i.e. linear-gradient(to right,#dc573c,#247efc);)
2. Create or edit another color token - search by name or alias
3. See the gradient showing on the swatch

Before	After

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Latest commit: 09b3428b1b2770cd30ccf2aa21ecb9a7d9d2ad5a

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