chore: correct typo in default it appears deafault

[danielphilipjohnson]

What?

This PR addresses a small typo found in the naming of the default banner background color class. The typo could potentially lead to styling issues or confusion among developers.

Changes

• Corrected the class name from banner--deafault-backgroundColor to banner--default-backgroundColor.
• Updated all occurrences of this typo in both the configuration file and alert.scss to ensure consistency and correct functionality.

Impact

• The correction of this typo will ensure that the default banner background color is applied as intended across the application.
• Developers will now find the correctly named class, aligning with standard naming conventions, thus improving code readability and maintainability.

Additional Notes

• No changes were made to the functionality or visual aspects of the banner; this PR strictly corrects the class name typo.
• I have verified that this change does not affect any other components or styles.

Thank you for considering this PR. I'm open to any feedback or additional changes that might be necessary!

Requirements

• CHANGELOG.md entry added (required for code changes only)

[BC-krasnoshapka]

Good catch!