Various backports and alignments with polkadot-sdk (which does not depend on crates.io versions)

[bkontur]

Summary

This PR proposes several changes.

• The alignment of the terminology used for "common-good" and "system" parachains in the Polkadot ecosystem, as discussed in PR#1406.
• Additionally, it suggests the removal of the ChildSystemParachainAsSuperuser feature from the Kusama runtime, as mentioned in a comment on the same PR comment link.
• Relax force_default_xcm_version in SafeCallFilter for system parachains - based on Relax force_default_xcm_version for testnet system parachains paritytech/polkadot-sdk#2385
• Add Storage item to PolkadotXcm pallet definition for BridgeHubs (now we cannot see storage items for pallet_xcm in polkadot.js) - based on Relax force_default_xcm_version for testnet system parachains paritytech/polkadot-sdk#2385

Explanation

A significant change of PR#1406 is the redefinition of what constitutes a "system" parachain. Previously, a "system" parachain was identified with para_id <= 1000. However, the PR#1406 changed a definition, considering a "system" parachain to have para_id <= 1999.

One consequence of this change is the reconsideration of the ChildSystemParachainAsSuperuser feature. This feature relies on the is_system function, which, in turn, depends on the para_id of a parachain to determine "system" status. However, further examination has revealed that there is no known scenario in which a system parachain would need to call the Kusama runtime with RuntimeOrigin::root() privileges. Consequently, maintaining the ChildSystemParachainAsSuperuser feature in the Kusama runtime is deemed unnecessary.

References

• GitHub Pull Request #1406
• GitHub Pull Request #2385
• Redo of Remove ChildSystemParachainAsSuperuser from Kusama runtime + align "System" vs "common good" terminology #32 on main.

[bkchr]

/merge

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[acatangiu]

review-bot is still not correctly working - it is not counting Rank 2 reviews although it says it does: https://github.com/polkadot-fellows/runtimes/pull/45/checks?check_run_id=19430490502

cc @Bullrich

[bkchr]

review-bot is still not correctly working - it is not counting Rank 2 reviews although it says it does: https://github.com/polkadot-fellows/runtimes/pull/45/checks?check_run_id=19430490502

cc @Bullrich

Had you rerun the bot? I mean you got added probably to the fellowship after the bot ran the last time.