[dartdev] Run remote empty version

Fixes: #62122
Change-Id: Id8331c58d968b6c92cfe7c1ae9be75d80260e772
Cq-Include-Trybots: luci.dart.try:pkg-mac-release-try,pkg-mac-release-arm64-try,pkg-win-release-try,pkg-linux-release-try,pkg-linux-debug-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/467803
Reviewed-by: Sigurd Meldgaard <[email protected]>
Commit-Queue: Daco Harkes <[email protected]>

Author: dcharkes

pkg/dartdev/lib/src/commands/run.dart

@@ -707,6 +707,9 @@ Enables running executables from remote packages.
                 ?.split(_colonButNoSlashes)
                 .first ??
             'any';
+        if (versionConstraint.isEmpty) {
+          versionConstraint = 'any';
+        }
       case RemoteSourceKind.path:
         throw StateError('Unreachable');
     }

pkg/dartdev/test/native_assets/run_remote_test.dart

@@ -89,9 +89,11 @@ void main() async {
     );
   });
 
-  for (final withVersion in [false, true]) {
-    test('dart run hosted package${withVersion ? ' with version' : ''}',
-        timeout: longTimeout, () async {
+  for (final version in ['', '@$_packageVersion', '@']) {
+    final testName = version == ''
+        ? 'no version'
+        : (version == '@' ? 'empty version' : 'with version');
+    test('dart run hosted package $testName', timeout: longTimeout, () async {
       await inTempDir((tempUri) async {
         final dartDataHome = tempUri.resolve('dart_home/');
         await Directory.fromUri(dartDataHome).create();
@@ -103,7 +105,6 @@ void main() async {
               '${binDir.path}$_pathEnvVarSeparator${Platform.environment['PATH']!}',
         };
 
-        var version = withVersion ? '@$_packageVersion' : '';
         final runResult = await _runDartdev(
           fromDartdevSource,
           'run',