Fix workspace configuration error with structured_output_lowlevel.py (#1471)

Co-authored-by: lorenss-m <saeclmusic@gmail.com>

uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 
 [manifest]
@@ -13,6 +13,7 @@ members = [
     "mcp-simple-streamablehttp-stateless",
     "mcp-simple-tool",
     "mcp-snippets",
+    "mcp-structured-output-lowlevel",
 ]
 
 [[package]]
@@ -948,6 +949,17 @@ dependencies = [
 [package.metadata]
 requires-dist = [{ name = "mcp", editable = "." }]
 
+[[package]]
+name = "mcp-structured-output-lowlevel"
+version = "0.1.0"
+source = { virtual = "examples/servers/structured-output-lowlevel" }
+dependencies = [
+    { name = "mcp" },
+]
+
+[package.metadata]
+requires-dist = [{ name = "mcp", editable = "." }]
+
 [[package]]
 name = "mdurl"
 version = "0.1.2"