Remove redundant `rootDirectoryPath` parameter in `DevFS::update` (#143034)

Resolves #143041

packages/flutter_tools/lib/src/devfs.dart

@@ -570,7 +570,6 @@ class DevFS {
     DateTime? firstBuildTime,
     bool bundleFirstUpload = false,
     bool fullRestart = false,
-    String? projectRootPath,
     File? dartPluginRegistrant,
   }) async {
     final DateTime candidateCompileTime = DateTime.now();
@@ -598,7 +597,7 @@ class DevFS {
       invalidatedFiles,
       outputPath: dillOutputPath,
       fs: _fileSystem,
-      projectRootPath: projectRootPath,
+      projectRootPath: rootDirectory?.path,
       packageConfig: packageConfig,
       checkDartPluginRegistry: true, // The entry point is assumed not to have changed.
       dartPluginRegistrant: dartPluginRegistrant,

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

@@ -569,7 +569,6 @@ Please provide a valid TCP port (an integer between 0 and 65535, inclusive).
       generator: device!.generator!,
       fullRestart: fullRestart,
       dillOutputPath: dillOutputPath,
-      projectRootPath: projectRootPath,
       pathToReload: getReloadPath(fullRestart: fullRestart, swap: false),
       invalidatedFiles: invalidationResult.uris!,
       packageConfig: invalidationResult.packageConfig!,

packages/flutter_tools/lib/src/resident_runner.dart

@@ -560,7 +560,6 @@ class FlutterDevice {
     bool bundleFirstUpload = false,
     bool bundleDirty = false,
     bool fullRestart = false,
-    String? projectRootPath,
     required String pathToReload,
     required String dillOutputPath,
     required List<Uri> invalidatedFiles,
@@ -581,7 +580,6 @@ class FlutterDevice {
         fullRestart: fullRestart,
         dillOutputPath: dillOutputPath,
         trackWidgetCreation: buildInfo.trackWidgetCreation,
-        projectRootPath: projectRootPath,
         pathToReload: pathToReload,
         invalidatedFiles: invalidatedFiles,
         packageConfig: packageConfig,

packages/flutter_tools/lib/src/run_hot.dart

@@ -542,7 +542,6 @@ class HotRunner extends ResidentRunner {
         bundleFirstUpload: isFirstUpload,
         bundleDirty: !isFirstUpload && rebuildBundle,
         fullRestart: fullRestart,
-        projectRootPath: projectRootPath,
         pathToReload: getReloadPath(fullRestart: fullRestart, swap: _swap),
         invalidatedFiles: invalidationResult.uris!,
         packageConfig: invalidationResult.packageConfig!,