refactor(sbb-chip-label): rename chip to chip-label

[MarioCastigliano]

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Issue

This PR Closes #3149

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• Tests for the changes have been added (for bug fixes / features)
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Changes

Changes in this pull request:

Browsers

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• Safari Mobile

Screen readers

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Pull request type

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• Bugfix
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• Refactoring (no functional changes, no api changes)
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Does this introduce a breaking change?

• Yes
• No

Other information