When users choose not to create a backorder for remaining stock quantities, the system now skips creating one instead of creating and immediately cancelling it. This makes stock processing cleaner, reduces unnecessary records, and better matches the user's chosen workflow.

Description of the issue/feature this PR addresses:
Creation of backorders only when needed

Current behavior before PR:
- When the option "No Backorder" was selected, a backorder was created then cancelled.

Desired behavior after PR is merged:
- When the option "No Backorder" was selected, no backorders are created.

( Task ID : 46981 )

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Newly created websites now start with a more polished and easier-to-edit homepage. The welcome message also uses the website name and only shows guidance when helpful, making setup clearer for users.