breadcrumbs: remove styled and simplify

[JonasBa]

Simplify breadcrumb component and add amplitude logging.

• Removed optional key prop
• Use layout and text components for styling
• Improve prop types so that null labels cannot be passed to components
• Add amplitude event tracking so we can gauge how many folks interact with our breadcrumbs

[codecov]

❌ 2 Tests Failed:

Tests completed	Failed	Passed	Skipped
12378	2	12376	10

View the top 2 failed test(s) by shortest run time

Discover > Landing links back to the homepage

Stack Traces | 0.14s run time

Error: expect(element).toHaveAttribute("href", ".../explore/discover/homepage/") // element.getAttribute("href") === ".../explore/discover/homepage/"

Expected the element to have attribute:
  href=".../explore/discover/homepage/"
Received:
  null
    at Object.toHaveAttribute (.../views/discover/landing.spec.tsx:119:49)

Results Events links back to the homepage through the Discover breadcrumb

Stack Traces | 0.811s run time

Error: expect(element).toHaveAttribute("href", StringMatching /^\/organizations\/org-slug\/explore\/discover\/homepage\//) // element.getAttribute("href") === StringMatching /^\/organizations\/org-slug\/explore\/discover\/homepage\//

Expected the element to have attribute:
  href=StringMatching /^\/organizations\/org-slug\/explore\/discover\/homepage\//
Received:
  null
    at Object.toHaveAttribute (.../views/discover/results.spec.tsx:1207:44)
    at runNextTicks (node:internal/process/task_queues:65:5)
    at processTimers (node:internal/timers:520:9)

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[natemoo-re]

Looks great! Not blocking, but removing the mutation would be nice while we're here.

[natemoo-re]

Very nice refactor! Much cleaner 👌