Merge pull request #5341 from eatonphil/dev/pe/group-commit-must-be-raft

ALL with GROUP COMMIT must use Raft

Author: djw-m

product_docs/docs/pgd/5/durability/commit-scopes.mdx

@@ -129,13 +129,13 @@ SELECT bdr.create_node_group(
 SELECT bdr.add_commit_scope(
     commit_scope_name := 'example_scope',
     origin_node_group := 'left_dc',
-    rule := 'ALL (left_dc) GROUP COMMIT AND ANY 1 (right_dc) GROUP COMMIT',
+    rule := 'ALL (left_dc) GROUP COMMIT (commit_decision=raft) AND ANY 1 (right_dc) GROUP COMMIT',
     wait_for_ready := true
 );
 SELECT bdr.add_commit_scope(
     commit_scope_name := 'example_scope',
     origin_node_group := 'right_dc',
-    rule := 'ANY 1 (left_dc) GROUP COMMIT AND ALL (right_dc) GROUP COMMIT',
+    rule := 'ANY 1 (left_dc) GROUP COMMIT AND ALL (right_dc) GROUP COMMIT (commit_decision=raft)',
     wait_for_ready := true
 );
 ```