Possible wrong aggregated dates with disabled pages (e.g. future content)

[bep]

The test below should fail as content/s1/p3.md is future content in both scenarios:

func TestPublisDateRollupIssue12438(t *testing.T) {
	t.Parallel()

	// To future Hugo maintainers, this test will start to fail in 2099.
	files := `
-- hugo.toml --
disableKinds = ['home','rss','sitemap']
[taxonomies]
tag = 'tags'
-- layouts/_default/list.html --
Date: {{ .Date.Format "2006-01-02" }}
PublishDate: {{ .PublishDate.Format "2006-01-02" }}
Lastmod: {{ .Lastmod.Format "2006-01-02" }}
-- layouts/_default/single.html --
{{ .Title }}
-- content/s1/p1.md --
---
title: p1
date: 2024-03-01
lastmod: 2024-03-02
tags: [t1]
---
-- content/s1/p2.md --
---
title: p2
date: 2024-04-03
lastmod: 2024-04-04
tags: [t1]
---
-- content/s1/p3.md --
---
title: p3
lastmod: 2099-05-06
tags: [t1]
---

`

	// Test without publishDate in front matter.
	b := Test(t, files)

	b.AssertFileContent("public/s1/index.html", `
		Date: 2099-05-06
		PublishDate: 2024-04-03
		Lastmod: 2099-05-06
	`)

	b.AssertFileContent("public/tags/index.html", `
		Date: 2024-04-03
		PublishDate: 2024-04-03
		Lastmod: 2024-04-04
	`)

	b.AssertFileContent("public/tags/t1/index.html", `
		Date: 2024-04-03
		PublishDate: 2024-04-03
		Lastmod: 2024-04-04
	`)

	// Test with publishDate in front matter.
	files = strings.ReplaceAll(files, "lastmod", "publishDate")

	b = Test(t, files)

	b.AssertFileContent("public/s1/index.html", `
		Date: 2099-05-06
		PublishDate: 2024-04-04
		Lastmod: 2099-05-06
	`)

	b.AssertFileContent("public/tags/index.html", `
		Date: 2024-04-03
		PublishDate: 2024-04-04
		Lastmod: 2024-04-03
	`)

	b.AssertFileContent("public/tags/t1/index.html", `
		Date: 2024-04-03
		PublishDate: 2024-04-04
		Lastmod: 2024-04-03
	`)
}