Update to latest Flutter candidate version and resolve failing benchmark tests (#9466)

Author: elliette

flutter-candidate.txt

@@ -1 +1 @@
-86327198ff0678f46cbdfb3e12f1759d03aa768d
+c63c6b08a7114517575bcf3e45275ec7a9f4e87f

packages/devtools_app/benchmark/devtools_benchmarks_test.dart

@@ -75,7 +75,12 @@ Future<void> _runBenchmarks({bool useWasm = false}) async {
 
   for (final devToolsBenchmark in DevToolsBenchmark.values) {
     final benchmarkName = devToolsBenchmark.id;
-    final expectedMetrics = expectedBenchmarkMetrics(useWasm: useWasm);
+    // Note: Due to https://github.com/flutter/flutter/pull/175392 there is no
+    // longer any difference in benchmark events for skwasm vs. canvaskit.
+    //
+    // TODO(https://github.com/flutter/flutter/issues/177057): Remove hardcoded
+    // useWasm: false param when package:web_benchmarks is updated.
+    final expectedMetrics = expectedBenchmarkMetrics(useWasm: false);
     const expectedComputations = BenchmarkMetricComputation.values;
     final scores = taskResult.scores[benchmarkName] ?? [];
     expect(