Fine. Use ManifestFunctionType for setter items.

Switch setter manifest entries from a single `valueType` to the full
`ManifestFunctionType`. This captures parameter covariantness and
metadata, which were previously omitted, and aligns setters with methods
and constructors that already use function types.

Key changes:
- Encode and match setter items using `element.type` (function type)
  rather than `valueFormalParameter.type`.
- Serialize setters via `functionType.writeNoTag(...)` and read with
  `ManifestFunctionType.read(...)`.
- Update the result printer to display `functionType` for setters.
- Bump `AnalysisDriver.DATA_VERSION` to invalidate incompatible caches.

Why: Recording the full function signature ensures that manifest IDs
change when parameter covariance or annotations change, improving
fidelity of fine-grained dependency tracking and reuse decisions. The
representation is now consistent across executable members.

Impact: Slight increase in serialized size and comparison work for
setters; expected to be negligible. No behavioral changes to analysis,
only more accurate change detection and manifest output.

Change-Id: I2a753d0cf0d41176f46683e5f4a30e432f968d8c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/448060
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Johnni Winther <[email protected]>
Reviewed-by: Paul Berry <[email protected]>

Author: scheglov

pkg/analyzer/lib/src/dart/analysis/driver.dart

@@ -106,7 +106,7 @@ testFineAfterLibraryAnalyzerHook;
 // TODO(scheglov): Clean up the list of implicitly analyzed files.
 class AnalysisDriver {
   /// The version of data format, should be incremented on every format change.
-  static const int DATA_VERSION = 533;
+  static const int DATA_VERSION = 534;
 
   /// The number of exception contexts allowed to write. Once this field is
   /// zero, we stop writing any new exception contexts in this process.

pkg/analyzer/lib/src/fine/manifest_item.dart

@@ -845,13 +845,13 @@ class InstanceItemMethodItem extends InstanceItemMemberItem<MethodElementImpl> {
 }
 
 class InstanceItemSetterItem extends InstanceItemMemberItem<SetterElementImpl> {
-  final ManifestType valueType;
+  final ManifestFunctionType functionType;
 
   InstanceItemSetterItem({
     required super.id,
     required super.metadata,
     required super.isStatic,
-    required this.valueType,
+    required this.functionType,
   });
 
   factory InstanceItemSetterItem.fromElement({
@@ -866,7 +866,7 @@ class InstanceItemSetterItem extends InstanceItemMemberItem<SetterElementImpl> {
         element.thisOrVariableMetadata,
       ),
       isStatic: element.isStatic,
-      valueType: element.valueFormalParameter.type.encode(context),
+      functionType: element.type.encode(context),
     );
   }
 
@@ -875,20 +875,20 @@ class InstanceItemSetterItem extends InstanceItemMemberItem<SetterElementImpl> {
       id: ManifestItemId.read(reader),
       metadata: ManifestMetadata.read(reader),
       isStatic: reader.readBool(),
-      valueType: ManifestType.read(reader),
+      functionType: ManifestFunctionType.read(reader),
     );
   }
 
   @override
   bool match(MatchContext context, SetterElementImpl element) {
     return super.match(context, element) &&
-        valueType.match(context, element.valueFormalParameter.type);
+        functionType.match(context, element.type);
   }
 
   @override
   void write(BufferedSink sink) {
     super.write(sink);
-    valueType.write(sink);
+    functionType.writeNoTag(sink);
   }
 
   @override