Update from github-actions[bot] running command 'prdoc'

Author: github-actions[bot]

prdoc/pr_10340.prdoc

@@ -0,0 +1,16 @@
+title: Remove "SolutionImprovementThreshold" logic
+doc:
+- audience: Todo
+  description: |-
+    Fixes [9119](https://github.com/paritytech/polkadot-sdk/issues/9119)
+
+    The threshold mechanism used by the "election-provider-multi-block" verifier pallet is no longer relevant because there is no more queued solution to compare against during the initial verification and subseuquently, solutions are processed in the order of decreasing score, with the first one being chosen in all cases.
+crates:
+- name: asset-hub-westend-runtime
+  bump: major
+- name: pallet-election-provider-multi-block
+  bump: major
+- name: pallet-election-provider-multi-phase
+  bump: major
+- name: sp-npos-elections
+  bump: major