docs: add example of inline-block size

[sun-mota]

Alaska Airlines Pull Request

closes #57

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By submitting this Pull Request, I confirm that my contribution is made under the terms of the Apache 2.0 license and I have performed a self-review of my own update.

Summary by Sourcery

Documentation:

• Add a new example demonstrating the use of inline-block size for auro-dropdown components, showcasing different configurations such as icon only, text only, and text with icon.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates the dropdown component documentation by replacing the aria-labelledby example with a new example demonstrating how to create inline-block dropdowns with different trigger styles (icon-only, text-only, and text with icon). The implementation includes adding the necessary auro-icon script and creating a new example file.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added new example for inline-block dropdown implementation	Created new example showing three dropdown variants: icon-only, text-only, and text with icon Added display: inline-block styling to match dropdown width with trigger content Implemented white-space: nowrap to prevent trigger text wrapping	components/dropdown/apiExamples/ineline.html
Updated documentation structure and content	Removed aria-labelledby example section Added new section 'Common use with its width matching the trigger' Updated example descriptions and implementation details	components/dropdown/demo/index.md components/dropdown/docs/partials/index.md
Added required dependency for new functionality	Added auro-icon script import for icon support in dropdown examples	components/dropdown/demo/index.html

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#57	Add examples of dropdowns with trigger width matching content size	✅
#57	Include examples with both default trigger and auro-icon trigger	✅

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