Add validate_xcm_nesting to the ParentAsUmp and ChildParachainRouter (#4236)

This PR:
- moves `validate_xcm_nesting` from `XcmpQueue` into the `VersionedXcm`
- adds `validate_xcm_nesting` to the `ParentAsUmp`
- adds `validate_xcm_nesting` to the `ChildParachainRouter`


Based on discussion
[here](https://github.com/paritytech/polkadot-sdk/pull/4186#discussion_r1571344270)
and/or
[here](https://github.com/paritytech/polkadot-sdk/pull/4186#discussion_r1572076666)
and/or [here]()

## Question/TODO

- [x] To the
[comment](https://github.com/paritytech/polkadot-sdk/pull/4186#discussion_r1572072295)
- Why was `validate_xcm_nesting` added just to the `XcmpQueue` router
and nowhere else? What kind of problem `MAX_XCM_DECODE_DEPTH` is
solving? (see
[comment](https://github.com/paritytech/polkadot-sdk/pull/4236#discussion_r1574605191))

polkadot/runtime/common/src/integration_tests.rs

@@ -39,7 +39,7 @@ use primitives::{
 	MAX_CODE_SIZE,
 };
 use runtime_parachains::{
-	configuration, origin, paras, shared, Origin as ParaOrigin, ParaLifecycle,
+	configuration, dmp, origin, paras, shared, Origin as ParaOrigin, ParaLifecycle,
 };
 use sp_core::H256;
 use sp_io::TestExternalities;
@@ -84,6 +84,7 @@ frame_support::construct_runtime!(
 		Paras: paras,
 		ParasShared: shared,
 		ParachainsOrigin: origin,
+		Dmp: dmp,
 
 		// Para Onboarding Pallets
 		Registrar: paras_registrar,
@@ -201,6 +202,8 @@ impl shared::Config for Test {
 	type DisabledValidators = ();
 }
 
+impl dmp::Config for Test {}
+
 impl origin::Config for Test {}
 
 parameter_types! {