[web][upstream] Don't register exit/saveCompilationTrace for web platform...

[web][upstream] Don't register exit/saveCompilationTrace for web platform since they are not available (#37812)

* Don't register N/A services exit/saveCompilationTrace for web platform

packages/flutter/lib/src/foundation/binding.dart

@@ -132,7 +132,7 @@ abstract class BindingBase {
       return true;
     }());
 
-    if (!kReleaseMode) {
+    if (!kReleaseMode && !kIsWeb) {
       registerSignalServiceExtension(
         name: 'exit',
         callback: _exitApplication,

packages/flutter/test/foundation/service_extensions_test.dart

@@ -453,7 +453,8 @@ void main() {
 
   test('Service extensions - exit', () async {
     // no test for _calling_ 'exit', because that should terminate the process!
-    expect(binding.extensions.containsKey('exit'), isTrue);
+    // Not expecting extension to be available for web platform.
+    expect(binding.extensions.containsKey('exit'), !isBrowser);
   });
 
   test('Service extensions - platformOverride', () async {
@@ -671,5 +672,5 @@ void main() {
     expect(trace, contains('dart:core,Object,Object.\n'));
     expect(trace, contains('package:test_api/test_api.dart,::,test\n'));
     expect(trace, contains('service_extensions_test.dart,::,main\n'));
-  });
+  }, skip: isBrowser);
 }