Update change notes for api changes

Author: owen-mc

go/ql/lib/change-notes/2025-09-19-api-changes.md

@@ -1,6 +1,5 @@
 ---
 category: breaking
 ---
-* The member predicate `writesField(DataFlow::Node base, Field f, DataFlow::Node rhs)` on `DataFlow::Write` now uses the post-update node for `base` when that is the node being updated, which is in all cases except initializing a struct literal. A new member predicate `writesFieldOnSsaWithFields(SsaWithFields v, Field f, DataFlow::Node rhs)` has been added for the case of writes to a SsaWithFields node.
-* The member predicate `writesElement(DataFlow::Node base, DataFlow::Node index, DataFlow::Node rhs)` on `DataFlow::Write` now uses the post-update node for `base` when that is the node being updated, which is in all cases except initializing an array/slice/map literal.
-* The member predicate `writesComponent(DataFlow::Node base, DataFlow::Node rhs)` on `DataFlow::Write` now uses the post-update node for `base` when that is the node being updated, which is in all cases except initializing a struct/array/slice/map literal.
+* The member predicate `writesField` on `DataFlow::Write` now uses the post-update node for `base` when that is the node being updated, which is in all cases except initializing a struct literal. A new member predicate `writesFieldPreUpdate` has been added for cases where this behaviour is not desired.
+* The member predicate `writesElement` on `DataFlow::Write` now uses the post-update node for `base` when that is the node being updated, which is in all cases except initializing an array/slice/map literal. A new member predicate `writesElementPreUpdate` has been added for cases where this behaviour is not desired.

go/ql/lib/change-notes/2025-10-02-writenode-writescomponent-deprecated.md

@@ -0,0 +1,4 @@
+---
+category: deprecated
+---
+* The member predicate `writesComponent` on `DataFlow::Write` has been deprecated. Instead, use `writesFieldPreUpdate` and `writesElementPreUpdate`, or their new versions `writesField` and `writesElement`.