Raise syntax error for mixing except and except* (#14895)

This PR adds a syntax error if the parser encounters a `TryStmt` that
has except clauses both with and without a star.

The displayed error points to each except clause that contradicts the
original except clause kind. So, for example,

```python
try:
    ....
except:     #<-- we assume this is the desired except kind
    ....
except*:    #<---  error will point here
    ....
except*:    #<--- and here
    ....
```

Closes #14860

crates/ruff_python_parser/resources/inline/err/try_stmt_mixed_except_kind.py

@@ -0,0 +1,22 @@
+try:
+    pass
+except:
+    pass
+except* ExceptionGroup:
+    pass
+try:
+    pass
+except* ExceptionGroup:
+    pass
+except:
+    pass
+try:
+    pass
+except:
+    pass
+except:
+    pass
+except* ExceptionGroup:
+    pass
+except* ExceptionGroup:
+    pass