[stable2509] Move prdocs to release folder in stable2509

prdoc/stable2506-2/pr_9451.prdoc

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+title: 'Call `SingleBlockMigrations` from `frame_system::Config` on `try_on_runtime_upgrade`.'
+doc:
+- audience: Runtime Dev
+  description: |-
+    Fixes a small bug in `try-runtime` code, where `SingleBlockMigrations` from `frame_system::Config` was not called in `try_on_runtime_upgrade`.
+crates:
+- name: frame-executive
+  bump: patch

prdoc/stable2506-2/pr_9514.prdoc

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+title: 'Paras: Clean up `AuthorizedCodeHash` when offboarding'
+doc:
+- audience: Runtime Dev
+  description: This PR updates the `Paras` pallet to clear entries in `AuthorizedCodeHash`
+    as part of the offboarding process.
+crates:
+- name: polkadot-runtime-parachains
+  bump: patch
+- name: westend-runtime
+  bump: patch

prdoc/stable2506-2/pr_9516.prdoc

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+title: Fix for `promote_fast` benchmark
+doc:
+- audience: Runtime Dev
+  description: Fixed benchmark generation/compilation for `promote_fast` `MaxRank` change from `u32` to `u16`.
+crates:
+- name: collectives-westend-runtime
+  bump: patch
+- name: pallet-core-fellowship
+  bump: patch

prdoc/stable2506-2/pr_9544.prdoc

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+# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
+# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
+
+title: Disable reserve_transfer_assets for DOT|KSM|WND|PAS
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      The reserve_transfer_assets extrinsic on pallet-xcm is also affected by the same issue as transfer_assets.
+      These extrinsics have been updated to return an error when dealing with DOT|KSM|WND|PAS, effectively disabling them.
+      We can't afford these extrinsics to be enabled after the Asset Hub Migration (AHM) and risk trapping assets due
+      to chain misconfigurations.
+      All chains need to update and coordinate with their dapps to move to the alternatives, like `transfer_assets_using_type_and_then`
+      or `execute`.
+  - audience: Runtime User
+    description: |
+      The reserve_transfer_assets extrinsic on pallet-xcm is also affected by the same issue as transfer_assets.
+      These extrinsics have been updated to return an error when dealing with DOT|KSM|WND|PAS, effectively disabling them.
+      We can't afford these extrinsics to be enabled after the Asset Hub Migration (AHM) and risk trapping assets due
+      to chain misconfigurations.
+      All apps should switch to `transfer_assets_using_type_and_then` or `execute`.
+
+crates:
+- name: pallet-xcm
+  bump: patch
+- name: asset-test-utils
+  bump: patch
+- name: westend-runtime
+  bump: patch
+- name: rococo-runtime
+  bump: patch
+- name: asset-hub-rococo-runtime
+  bump: patch
+- name: asset-hub-westend-runtime
+  bump: patch

prdoc/stable2506-2/pr_9564.prdoc

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+title: 'Fix disabled validator filtering in the parachains runtime'
+doc:
+- audience: Runtime Dev
+  description: Correctly map group indices to vote indices when filtering backing statements.
+crates:
+- name: polkadot-runtime-parachains
+  bump: patch

prdoc/stable2506-2/pr_9581.prdoc

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+title: 'fix: parachain informant'
+doc:
+- audience: Node Operator
+  description: |-
+    The parachain informant was logging information for all parachains, not just ours. This PR fixes that by filtering the events by parachain ID.
+crates:
+- name: cumulus-client-service
+  bump: patch