feat: align to Salt Vertical Navigation pattern

[mark-tate]

• groups now expand and collapse and do not select a route
• sidebar group label can be defined through frontmatter sidebar.groupLabel
• breadcrumbs do not display the root page
• pagination now steps through all pages within the user journey
• paginator buttons show the group, as well as the page title

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Name	Status	Preview	Comments	Updated (UTC)
mosaic	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 10, 2024 3:59pm

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: dcc48c75a5381d328b96452fb68f24d025964804

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 28 packages

| Name | Type | | ------------------------------------------- | ----- | | @jpmorganchase/mosaic-plugins | Patch | | @jpmorganchase/mosaic-site-components | Patch | | @jpmorganchase/mosaic-store | Patch | | @jpmorganchase/mosaic-site-preset-styles | Patch | | @jpmorganchase/mosaic-cli | Patch | | @jpmorganchase/mosaic-labs-components | Patch | | @jpmorganchase/mosaic-components | Patch | | @jpmorganchase/mosaic-content-editor-plugin | Patch | | @jpmorganchase/mosaic-core | Patch | | @jpmorganchase/mosaic-create-site | Patch | | @jpmorganchase/mosaic-from-http-request | Patch | | @jpmorganchase/mosaic-layouts | Patch | | @jpmorganchase/mosaic-open-api-component | Patch | | @jpmorganchase/mosaic-schemas | Patch | | @jpmorganchase/mosaic-serialisers | Patch | | @jpmorganchase/mosaic-site-middleware | Patch | | @jpmorganchase/mosaic-site | Patch | | @jpmorganchase/mosaic-sitemap-component | Patch | | @jpmorganchase/mosaic-source-figma | Patch | | @jpmorganchase/mosaic-source-git-repo | Patch | | @jpmorganchase/mosaic-source-http | Patch | | @jpmorganchase/mosaic-source-local-folder | Patch | | @jpmorganchase/mosaic-source-readme | Patch | | @jpmorganchase/mosaic-source-storybook | Patch | | @jpmorganchase/mosaic-standard-generator | Patch | | @jpmorganchase/mosaic-theme | Patch | | @jpmorganchase/mosaic-types | Patch | | @jpmorganchase/mosaic-workflows | Patch |

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