feat: allow authors to set the value of reversePagination in page front matter

[KStocky]

Currently, there is no way for authors to choose the order in which PAGE.PrevInSection and PAGE.NextInSection are ordered for navigation in the footer of a page.

This PR just changes the reversePagination input in layouts/partials/components/pager.html from being hardcoded to true, to being set from the page front matter like so:

---
params:
  reversePagination: false
---

This allows authors to disable this reverse authoring on a per page basis or use the cascade front matter to set it on entire page sections.

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[imfing]

thank you, this looks good

[Copilot]

Pull Request Overview

This PR makes pagination direction configurable per page by reading a reversePagination flag from front matter and adds docs to guide authors on its usage.

• The blog single template now defaults reversePagination to the page’s param instead of always true.
• Documentation in the example site was added to explain how to toggle pagination order via front matter.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
layouts/blog/single.html	Use .Params.reversePagination with a default instead of hardcoded true
exampleSite/content/docs/guide/organize-files.md	New section on section pagination order and front-matter configuration

Comments suppressed due to low confidence (1)

layouts/blog/single.html:43

• Consider adding automated tests to verify that when reversePagination is set to true or false in front matter, the pager correctly flips navigation links.

{{- .Scratch.Set "reversePagination" (.Params.reversePagination | default true) -}}

[Copilot]

[nitpick] It may help to explicitly note that reversePagination must be placed under the params: section in your front matter (e.g., params:\n reversePagination: false).

Suggested change

	To disable this reversed ordering you can set the `reversePagination` custom parameter in the page front matter to `false`. By default `reversePagination` is set to `true`.
	#### Example
	To disable this reversed ordering, you can set the `reversePagination` custom parameter in the page front matter to `false`. By default, `reversePagination` is set to `true`.
	Note: The `reversePagination` parameter must be placed under the `params:` section in the front matter for it to work correctly.
	#### Example
	```yaml {filename="content/blog/_index.md"}
	---
	title: Blog
	params:
	reversePagination: false
	---