Win32 template: Use {{projectName}} for FileDescription instead of {{description}} (#91959)

packages/flutter_tools/templates/app_shared/windows.tmpl/runner/Runner.rc.tmpl

@@ -90,7 +90,7 @@ BEGIN
         BLOCK "040904e4"
         BEGIN
             VALUE "CompanyName", "{{organization}}" "\0"
-            VALUE "FileDescription", "{{description}}" "\0"
+            VALUE "FileDescription", "{{projectName}}" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "{{projectName}}" "\0"
             VALUE "LegalCopyright", "Copyright (C) {{year}} {{organization}}. All rights reserved." "\0"

packages/flutter_tools/test/commands.shard/permeable/create_test.dart

@@ -1022,6 +1022,7 @@ void main() {
     expect(resourceFile, exists);
     final String contents = resourceFile.readAsStringSync();
     expect(contents, contains('"CompanyName", "com.foo.bar"'));
+    expect(contents, contains('"FileDescription", "flutter_project"'));
     expect(contents, contains('"ProductName", "flutter_project"'));
   }, overrides: <Type, Generator>{
     FeatureFlags: () => TestFeatureFlags(isWindowsEnabled: true),