Quote the ToolAssembly path in BrotliCompress task. (#25101)

Fix #25098

Author: eerhardt

src/Components/WebAssembly/Sdk/src/BrotliCompress.cs

@@ -54,7 +54,18 @@ private string DotNetPath
             }
         }
 
-        protected override string GenerateCommandLineCommands() => ToolAssembly;
+        private static string Quote(string path)
+        {
+            if (string.IsNullOrEmpty(path) || (path[0] == '\"' && path[path.Length - 1] == '\"'))
+            {
+                // it's already quoted
+                return path;
+            }
+
+            return $"\"{path}\"";
+        }
+
+        protected override string GenerateCommandLineCommands() => Quote(ToolAssembly);
 
         protected override string GenerateResponseFileCommands()
         {