Add level indicators and path to stock location and part category dropdowns (#8366)

* Add level indicators and path to stock location dropdown

* Add level indicators and path to part category dropdown

* Updated stock location string to include location path

* Fix PUI form test (set location)

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Co-authored-by: Matthias Mair <code@mjmair.com>

src/frontend/tests/pui_forms.spec.ts

@@ -39,7 +39,7 @@ test('Forms - Stock Item Validation', async ({ page }) => {
 
   // Set location
   await page.getByLabel('related-field-location').click();
-  await page.getByRole('option', { name: /Electronics Lab/ }).click();
+  await page.getByText('Electronics production facility').click();
 
   // Create the stock item
   await page.getByLabel('number-field-quantity').fill('123');