Upgrade polkadot to latest stable-2506-2: Optimizations to FATx pool addressed

[saraswatpuneet]

Goal

The goal of this PR is to upgrade polkadot version to 2506-1

Following changes took place

• Host functions require some safe marshalling.
• xcm and assets weights updated to match latest interface.
• RuntimeEvent in Config is being made redundant ( haven't removed it but added allow deprecated for now)
• Updated tomls
• Suppressed a warning around runtume_interface that rust was warning about but it's polkadot design choice.
• Update node layer with updated functions and introduce new arguments
• update xcm configs in runtime with latest trait
• address clippy errors

Polkadot Notes on migration to 2506
Closes #2521

Discussion

• Polkadot fixes towards transaction pool fatxpool: limits handling optimizations and fixes paritytech/polkadot-sdk#8596

Checklist

• Updated Pallet Readme?
• Updated js/api-augment for Custom RPC APIs?
• Design doc(s) updated?
• Unit Tests added?
• e2e Tests added?
• Benchmarks added?
• Spec version incremented?

[codecov]

Codecov Report

❌ Patch coverage is 55.00000% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
common/primitives/src/offchain.rs	40.00%	6 Missing ⚠️
pallets/msa/src/offchain_storage.rs	66.66%	3 Missing ⚠️

Files with missing lines	Coverage Δ
pallets/capacity/src/lib.rs	88.59% <ø> (ø)
pallets/handles/src/lib.rs	94.61% <ø> (ø)
pallets/messages/src/lib.rs	93.80% <ø> (ø)
pallets/msa/src/lib.rs	92.56% <100.00%> (ø)
pallets/time-release/src/lib.rs	93.29% <ø> (ø)
pallets/msa/src/offchain_storage.rs	78.19% <66.66%> (-0.61%)	⬇️
common/primitives/src/offchain.rs	88.75% <40.00%> (-9.85%)	⬇️

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[JoeCap08055]

If we're moving Rust versions, do we also need or want to update the nightly toolchain that we use for formatting and linting? It's specified in a couple places in the CI workflows, as well as the main Makefile.

[mattheworris]

nit: is this related to the sdk upgrade? Seems like an xcm related change.

[saraswatpuneet]

@mattheworris yes these are newly added methods and following the change it seems this does not applies to us, @enddynayn there are come changes here that relates to xcm

[mattheworris]

• Read through changes, non-blocking comment.
  🚢 it!

[aramikm]

Overall looks good. We need to make sure to upgrade all the nodes first and then we can do runtime upgrades due to using a new hostfunction inside the runtime.

[aramikm]

@enddynayn If you don't have any opinions I think we can keep this as 0. Feel free to close the comment