Create subnet step is missing

[PedroCo3lho]

Describe the bug
The Create Subnet step is missing from the Avalanche Fundamentals course. A step number is even skipped from the content files, from 03-network-architecture.mdx to 05-create-blockchain.mdx skipping the 4th step.
Not having this step is critical for the Creating an L1 flow, since when creating a subnet, its id gets stored in the local storage, and the toolbox component expect this id to be already set, leading to the follow screen:

To Reproduce
Steps to reproduce the behavior:

1. Go to 05-create-blockchain, without having subnet id set on local storage
2. get stuck there with "No Subnet Selected", and without the possibility to advance

Expected behavior
having a 04-create-subnet.mdx step or appending CreateSubnet into a previous one

Desktop (please complete the following information):

• OS: Fedora
• Browser: Brave

[Bekirerdem]

this one appears fixed since jul 13 — commit d5ba678 embedded the <CreateSubnet /> tool at the top of the create-a-blockchain lesson, so the subnet id now lands in local storage inside the course flow and the create-chain step no longer dead-ends. the file numbering still skips 04 (03-network-architecture → 05-create-blockchain), but renaming files would break existing urls, so that gap is cosmetic. looks closable.