Pass the --disable-dds flag through to dwds (#78806)

packages/flutter_tools/lib/src/isolated/devfs_web.dart

@@ -174,6 +174,7 @@ class WebAssetServer implements AssetReader {
     bool useSseForDebugBackend,
     BuildInfo buildInfo,
     bool enableDwds,
+    bool enableDds,
     Uri entrypoint,
     ExpressionCompiler expressionCompiler,
     NullSafetyMode nullSafetyMode, {
@@ -280,7 +281,7 @@ class WebAssetServer implements AssetReader {
         _digestProvider,
       ).strategy,
       expressionCompiler: expressionCompiler,
-      spawnDds: true,
+      spawnDds: enableDds,
     );
     shelf.Pipeline pipeline = const shelf.Pipeline();
     if (enableDwds) {
@@ -609,6 +610,7 @@ class WebDevFS implements DevFS {
     @required this.useSseForDebugBackend,
     @required this.buildInfo,
     @required this.enableDwds,
+    @required this.enableDds,
     @required this.entrypoint,
     @required this.expressionCompiler,
     @required this.chromiumLauncher,
@@ -626,6 +628,7 @@ class WebDevFS implements DevFS {
   final bool useSseForDebugBackend;
   final BuildInfo buildInfo;
   final bool enableDwds;
+  final bool enableDds;
   final bool testMode;
   final ExpressionCompiler expressionCompiler;
   final ChromiumLauncher chromiumLauncher;
@@ -703,6 +706,7 @@ class WebDevFS implements DevFS {
       useSseForDebugBackend,
       buildInfo,
       enableDwds,
+      enableDds,
       entrypoint,
       expressionCompiler,
       nullSafetyMode,

packages/flutter_tools/lib/src/isolated/resident_web_runner.dart

@@ -504,6 +504,7 @@ class ResidentWebRunner extends ResidentRunner {
           useSseForDebugBackend: debuggingOptions.webUseSseForDebugBackend,
           buildInfo: debuggingOptions.buildInfo,
           enableDwds: _enableDwds,
+          enableDds: !debuggingOptions.disableDds,
           entrypoint: _fileSystem.file(target).uri,
           expressionCompiler: expressionCompiler,
           chromiumLauncher: _chromiumLauncher,

packages/flutter_tools/test/general.shard/web/devfs_web_test.dart

@@ -625,6 +625,7 @@ void main() {
         nullSafetyMode: NullSafetyMode.unsound,
       ),
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,
@@ -741,6 +742,7 @@ void main() {
         nullSafetyMode: NullSafetyMode.sound,
       ),
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,
@@ -847,6 +849,7 @@ void main() {
       useSseForDebugBackend: true,
       buildInfo: BuildInfo.debug,
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,
@@ -899,6 +902,7 @@ void main() {
         ]
       ),
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,
@@ -950,6 +954,7 @@ void main() {
         ]
       ),
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,
@@ -980,6 +985,7 @@ void main() {
         treeShakeIcons: false,
       ),
       false,
+      false,
       Uri.base,
       null,
       null,
@@ -1059,6 +1065,7 @@ void main() {
       nativeNullAssertions: true,
       buildInfo: BuildInfo.debug,
       enableDwds: false,
+      enableDds: false,
       entrypoint: Uri.base,
       testMode: true,
       expressionCompiler: null,