Fix duplicate symbol after Python 3.14.1 upgrade

Summary:
The import of Python 3.14.1 from upstream (D88171463) made `_PyDict_DelItem_KnownHash_LockHeld` in `Objects/dictobject.c` public (no longer static). This caused a duplicate symbol linker error because the borrowing script was still borrowing this function, resulting in two definitions of the function.

We do, however, need to keep borrowing the `_PyDict_DelItem_KnownHash_LockHeld` since it is not actually ever exported (via `PyAPI_FUNC`). To avoid the duplicate definition error, we rename it.

This change removes the `Borrow` directives for both `delitem_knownhash_lock_held` and `_PyDict_DelItem_KnownHash_LockHeld` from the template, since `delitem_knownhash_lock_held` no longer exists and `_PyDict_DelItem_KnownHash_LockHeld` is public.

Reviewed By: itamaro

Differential Revision: D88274838

fbshipit-source-id: 3bd141a1e6d3ed8571a38195df0abdb794b7e323

Author: Subbarao Garlapati

cinderx/UpstreamBorrow/borrowed-3.14.c.template

@@ -141,7 +141,6 @@ PyDictKeysObject* ci_dict_empty_keys;
 // @Borrow function delete_index_from_values from Objects/dictobject.c [3.14]
 // @Borrow function dictkeys_set_index from Objects/dictobject.c [3.14]
 // @Borrow function delitem_common from Objects/dictobject.c [3.14]
-// @Borrow function delitem_knownhash_lock_held from Objects/dictobject.c [3.14]
 // @Borrow function _PyDict_DelItem_KnownHash_LockHeld from Objects/dictobject.c [3.14]
 // @Borrow function new_keys_object from Objects/dictobject.c [3.14]
 #ifdef ENABLE_LAZY_IMPORTS

cinderx/UpstreamBorrow/borrowed.h

@@ -95,6 +95,7 @@
 #define _PyDict_CheckConsistency _CiDict_CheckConsistency
 #define _Py_dict_lookup_keep_lazy _Ci_dict_lookup_keep_lazy
 #define _PyDict_SetItem_LockHeld _CiDict_SetItem_LockHeld
+#define _PyDict_DelItem_KnownHash_LockHeld _CiDict_DelItem_KnownHash_LockHeld
 #define _PyInterpreterState_GetConfig _CiInterpreterState_GetConfig
 
 #ifdef __cplusplus