fix(6223): More properly add 'pyproject.toml' and 'poetry.lock' to the pip package (#6658)

build.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
 set -e
 
-cp pyproject.toml poetry.lock openhands
 poetry build -v

pyproject.toml

@@ -7,7 +7,9 @@ license = "MIT"
 readme = "README.md"
 repository = "https://github.com/All-Hands-AI/OpenHands"
 packages = [
-  { include = "openhands/**/*" }
+  { include = "openhands/**/*" },
+  { include = "pyproject.toml", to = "openhands" },
+  { include = "poetry.lock", to = "openhands" }
 ]
 
 [tool.poetry.dependencies]