Bridges testing improvements

[bkontur]

This PR includes:

• Refactored integrity tests to support standalone deployment of pallet-bridge-messages.
• Refactored the open_and_close_bridge_works test case to support multiple scenarios, such as:
  1. A local chain opening a bridge.
  2. Sibling parachains opening a bridge.
  3. The relay chain opening a bridge.
• Previously, we added instance support for pallet-bridge-relayer but overlooked updating the DeliveryConfirmationPaymentsAdapter.

TODO:

• [ ] backport to stable2409 https://github.com/paritytech/polkadot-sdk/pull/6558
• [ ] backport to stable2412

[bkontur]

/cmd prdoc --audience runtime_dev --bump patch

[bkontur]

/cmd fmt

[github-actions[bot]]

Command "fmt" has started 🚀 See logs here

[github-actions[bot]]

Command "fmt" has finished ✅ See logs here

[bkontur]

/cmd fmt

[github-actions[bot]]

Command "fmt" has started 🚀 See logs here

[github-actions[bot]]

Command "fmt" has finished ✅ See logs here

[paritytech-workflow-stopper[bot]]

All GitHub workflows were cancelled due to failure one of the required jobs. Failed workflow url: https://github.com/paritytech/polkadot-sdk/actions/runs/11915033654 Failed job name: test-linux-stable

[paritytech-cmd-bot-polkadot-sdk[bot]]

Created backport PR for stable2407:

• 6557 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-6536-to-stable2407
git worktree add --checkout .worktree/backport-6536-to-stable2407 backport-6536-to-stable2407
cd .worktree/backport-6536-to-stable2407
git reset --hard HEAD^
git cherry-pick -x bd0d0cde53272833deaaa0bcaddf95fba290ea77
git push --force-with-lease

[paritytech-cmd-bot-polkadot-sdk[bot]]

Created backport PR for stable2409:

• 6558 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-6536-to-stable2409
git worktree add --checkout .worktree/backport-6536-to-stable2409 backport-6536-to-stable2409
cd .worktree/backport-6536-to-stable2409
git reset --hard HEAD^
git cherry-pick -x bd0d0cde53272833deaaa0bcaddf95fba290ea77
git push --force-with-lease