vpp: T7972: Delete option nat44 no-forwarding from CLI

[natali-rs1985]

Change Summary

Related Task(s)

• https://vyos.dev/T7972

Related PR(s)

vyos/vyos-1x#4880

Backport

Checklist:

• I have read the CONTRIBUTING document

[zdc]

Suggested change

	How NAT Rules are Applied
	-------------------------
	1. **Dynamic Rules only**: The router will try to apply those rules to all incoming traffic, and everything else passes normally
	2. **Static + Dynamic Rules**: The router uses static rules first, and uses dynamic ones only when no static rule applies.
	3. **Static Rules only**: Only the traffic you explicitly define in a static rule gets translated. Everything else passes untouched.
	NAT Rule Processing and Traffic Flow
	------------------------------------
	This section explains how different combinations of NAT rules affect traffic handling on a router. There are three possible combinations of NAT rules configurations:
	1. **Dynamic NAT Only**
	* **All** traffic received on the "in" interface is processed by dynamic NAT rules without exceptions.
	2. **Dynamic + Static NAT**
	* **All** traffic received on the "in" interface is first matched against static NAT rules.
	* If no match is found, it is then processed by dynamic NAT rules.
	3. **Static NAT Only**
	* **All** traffic on the "in" interface is checked against static NAT rules.
	* If no match is found, the traffic is routed **without NAT**.
	.. important::
	* If **dynamic NAT rules** are present, **all** traffic received on "in" interfaces is subject to NAT processing.
	* If **only static NAT rules** are configured, traffic that does not match any static rule is routed unchanged.