chore: apply namespace pattern for component props (part 2)

[kurtdoherty]

Context

• Some components currently export their prop interfaces, while others do not. This leads to an inconsistent experience for consumers.
• Further, when exporting component props via a separate export to the component itself, this forces consumers to have two separate imports, one for the component and another for the component's props. This does provide any improvement over the use of React's ComponentProps.
• To provide a consistent approach, and to help consumers avoid needing to separately import component props, the following pattern will be applied to all core components:

export namespace MyComponent {
  export Props extends ... {
    ...
  }
}

export function MyComponent(props: MyComponent.Props) {
  ...
}

This way, when consumers import MyComponent, they will automatically have access to its prop interface via MyComponent.Props.

Past PRs include:

• chore: apply namespace pattern for component props (part 1) #766

This PR

Applies this namespace pattern for component props to another group of components:

• AppSwitcher
• BottomBar
• Breadcrumbs
• ChipSelect

[rpt-uk-github]

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[codacy-production]

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Coverage variation	Diff coverage
Report missing for 245d7b51	✅ 100.00%

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	Coverable lines	Covered lines	Coverage
Common ancestor commit (245d7b5)	Report Missing	Report Missing	Report Missing
Head commit (59d1ff7)	9233	8543	92.53%

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Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#767)	20	20	100.00%

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