Update Indonesian to support Docsy-style menus

[lmktfy]

Description

Update the front matter for Indonesian (Bahasa Indonesia) pages so that if we align more with Docsy, the top nav still works how we want. Currently, the top nav sections are hard coded:

• website/layouts/partials/navbar.html

  Line 28 in 9e1a118

  {{ $sections := slice "docs" "blog" "training" "careers" "partners" "community" }}

• website/layouts/404.html

  Line 9 in 9e1a118

  {{ $sections := slice "docs" "blog" "training" "partners" "community" "case-studies" }}

  (stale)

Original vs preview (no visible difference; this is an enabling change)

Issue

Helps with issues #41171 and #50228

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[habibrosyad]

Thanks

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 072544218051cf9a328b5aae91fa0917bf6f6e1c