`/tags/[tag_name]` does not display breadcrumbs when tag page was generated without index.md

[nonPointer]

Describe the bug
/tags/[tag_name] does not show Breadcrumbs.

To Reproduce

// components for pages that display lists of pages  (e.g. tags or folders)
export const defaultListPageLayout: PageLayout = {
  beforeBody: [
    Component.Breadcrumbs(),
    Component.ArticleTitle(), 
    Component.ContentMeta()
  ],
  left: [
    Component.PageTitle(),
    Component.MobileOnly(Component.Spacer()),
    Component.Flex({
      components: [
        {
          Component: Component.Search(),
          grow: true,
        },
        { Component: Component.Darkmode() },
      ],
    }),
    Component.RecentNotes(
      {
        title: "Recent Notes",
        count: 5,
        linkToMore: "posts/",
        filter: (node) => !node.filePath?.endsWith("index.md"), // exclude index page
      }
    ),
    // Component.Explorer(),
  ],
  right: [],
}

Expected behavior

Breadcrumbs show on /[folder]/ and /tags/[tag].

Real behaviour

It show on /[folder]/ but not on /tags/[tag].

Desktop (please complete the following information):

• Quartz Version: v4.5.2
• node Version: v24
• npm version: 11.6.0
• OS: macOS Tahoe 26.1
• Browser: Chrome 141.0.7390.123 (Official Build) (arm64)

Additional Information

This bug was also observed on official website.

Has breadcrumbs?

• tags: yes
• tags/component: yes
• tags/feature: no
• tags/feature/emitter: no