ci(weighted-edges): drop '/**' from ruff-action args so paths resolve

The weighted_edges_tests quality-gate job invokes astral-sh/ruff-action
with args containing 'm_flow/knowledge/graph_ops/**'. ruff-action passes
the string directly to ruff without shell glob expansion, so ruff treats
'/**' as a literal path component and fails with:

    E902 No such file or directory (os error 2)
     --> m_flow/knowledge/graph_ops/**:1:1

ruff already recurses into directories, so passing the plain directory
path 'm_flow/knowledge/graph_ops' is the standard idiom and matches how
the upstream ruff-action examples are written.

Verified locally with ruff 0.15.10 (lockfile-pinned version):

    $ uvx ruff@0.15.10 check m_flow/knowledge/graph_ops \
        m_flow/tests/unit/interfaces/graph/test_weighted_edges.py \
        examples/python/weighted_edges_example.py
    All checks passed!
    $ uvx ruff@0.15.10 format --check ...
    17 files already formatted

Signed-off-by: Alexazhu <alexazzjjtt@163.com>

Author: alexzhu0

.github/workflows/weighted_edges_tests.yml

@@ -57,12 +57,12 @@ jobs:
       - name: "Ruff lint pass"
         uses: astral-sh/ruff-action@f2e32211077f40bfeab40e16285216924ebea4cb  # v2
         with:
-          args: "check m_flow/knowledge/graph_ops/** m_flow/tests/unit/interfaces/graph/test_weighted_edges.py examples/python/weighted_edges_example.py"
+          args: "check m_flow/knowledge/graph_ops m_flow/tests/unit/interfaces/graph/test_weighted_edges.py examples/python/weighted_edges_example.py"
 
       - name: "Ruff format pass"
         uses: astral-sh/ruff-action@f2e32211077f40bfeab40e16285216924ebea4cb  # v2
         with:
-          args: "format --check m_flow/knowledge/graph_ops/** m_flow/tests/unit/interfaces/graph/test_weighted_edges.py examples/python/weighted_edges_example.py"
+          args: "format --check m_flow/knowledge/graph_ops m_flow/tests/unit/interfaces/graph/test_weighted_edges.py examples/python/weighted_edges_example.py"
 
   # ── Stage 2: unit regression across Python versions ────────────────────
   unit-regression: