turn off "Allow 'hub' to receive forwarded traffic from 'vnet'"

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In connectivity, we have the following code:
Results the following:

`Allow 'hub' to receive forwarded traffic from 'vnet'` is enabled by default. How can do disable it to avoid exposure?

No file, test, or entry point is named. Start by tracing the connectivity configuration shown in the issue's code screenshot and determine how Azure enables forwarded traffic by default. Done means identifying and clearly documenting or exposing a supported way to disable this setting, with the resulting landing-zone configuration verified.

Written by the indexing model from the issue text.