Compatibility pass on flutter/physics tests for JavaScript compilation. (6) (flutter#33359)

Author: Jonah Williams

dev/bots/test.dart

@@ -343,6 +343,7 @@ Future<void> _runTests() async {
 Future<void> _runWebTests() async {
   await _runFlutterWebTest(path.join(flutterRoot, 'packages', 'flutter'), expectFailure: false, tests: <String>[
     'test/foundation/',
+    'test/physics/',
     'test/rendering/',
     'test/services/',
     'test/painting/',

packages/flutter/test/physics/newton_test.dart

@@ -21,7 +21,7 @@ void main() {
 
     expect(friction.dx(1.0), 120.0);
     expect(friction.dx(2.0), 36.0);
-    expect(friction.dx(3.0), 10.8);
+    expect(friction.dx(3.0), closeTo(10.8, 0.00001));
     expect(friction.dx(4.0) < 3.5, true);
 
     expect(friction.isDone(5.0), true);