[DON-2457] Fix bottom sheet height to use wrapContentSize for better …

[RichSutherSky]

This pull request makes a small change to the layout of the modal bottom sheet header in the Compose implementation. The main update replaces a fixed height with a more flexible sizing approach for the header component.

	Before	After
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• Layout improvement:
  • Replaced the use of Modifier.height(BpkSpacing.Lg) with Modifier.wrapContentSize() for the modal bottom sheet header, allowing the header to size itself based on its content instead of a fixed height.
  • Removed the unused import of height and added wrapContentSize to the imports in BpkModalBottomSheetImpl.kt.

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[Copilot]

Pull request overview

This PR fixes the modal bottom sheet header height to be content-based instead of fixed, improving support for text scaling and accessibility. The change allows the header to adapt to its content size rather than being constrained to a fixed height.

• Replaced fixed height constraint with wrapContentSize() to allow header to size based on content
• Updated imports to reflect the modifier change

[skyscanner-backpack-bot]

	Warnings
⚠️	One or more component files were updated, but the tests weren't updated. If your change is not covered by existing tests please add snapshot tests.
⚠️	One or more component files were updated, but the docs screenshots weren't updated. If the changes are visual or it is a new component please regenerate the screenshots via ./gradlew recordScreenshots.
⚠️	One or more component files were updated, but README.md wasn't updated. If your change contains API changes/additions or a new component please update the relevant component README.

Generated by 🚫 Danger Kotlin against 60246a6

[skyscanner-backpack-bot]

	Warnings
⚠️	One or more component files were updated, but the tests weren't updated. If your change is not covered by existing tests please add snapshot tests.
⚠️	One or more component files were updated, but the docs screenshots weren't updated. If the changes are visual or it is a new component please regenerate the screenshots via ./gradlew recordScreenshots.
⚠️	One or more component files were updated, but README.md wasn't updated. If your change contains API changes/additions or a new component please update the relevant component README.

Generated by 🚫 Danger Kotlin against 705ee7c

[skyscanner-backpack-bot]

	Warnings
⚠️	One or more component files were updated, but the tests weren't updated. If your change is not covered by existing tests please add snapshot tests.
⚠️	One or more component files were updated, but the docs screenshots weren't updated. If the changes are visual or it is a new component please regenerate the screenshots via ./gradlew recordScreenshots.
⚠️	One or more component files were updated, but README.md wasn't updated. If your change contains API changes/additions or a new component please update the relevant component README.

Generated by 🚫 Danger Kotlin against 640012b

[skyscanner-backpack-bot]

	Warnings
⚠️	One or more component files were updated, but the tests weren't updated. If your change is not covered by existing tests please add snapshot tests.
⚠️	One or more component files were updated, but the docs screenshots weren't updated. If the changes are visual or it is a new component please regenerate the screenshots via ./gradlew recordScreenshots.
⚠️	One or more component files were updated, but README.md wasn't updated. If your change contains API changes/additions or a new component please update the relevant component README.

Generated by 🚫 Danger Kotlin against 25d0cb1