fix: keep call_operator_delete(void*) inline in precompiled mode

It selects the aligned and sized operator delete from C++ feature macros.
The precompiled library can use a different C++ standard than the module
that allocated the object, so the deallocation must be compiled with the
module.

Assisted-by: ClaudeCode:claude-opus-5-5

include/pybind11/pybind11-inl.h

diff --git a/include/pybind11/pybind11-inl.h b/include/pybind11/pybind11-inl.h
index b20f131..f34c24b 100644
--- a/include/pybind11/pybind11-inl.h
+++ b/include/pybind11/pybind11-inl.h
@@ -260,26 +260,6 @@
 }
 
 PYBIND11_NAMESPACE_BEGIN(detail)
-PYBIND11_INLINE void call_operator_delete(void *p, size_t s, size_t a) {
-    (void) s;
-    (void) a;
-#if defined(__cpp_aligned_new)
-    if (a > __STDCPP_DEFAULT_NEW_ALIGNMENT__) {
-#    ifdef __cpp_sized_deallocation
-        ::operator delete(p, s, std::align_val_t(a));
-#    else
-        ::operator delete(p, std::align_val_t(a));
-#    endif
-        return;
-    }
-#endif
-#ifdef __cpp_sized_deallocation
-    ::operator delete(p, s);
-#else
-    ::operator delete(p);
-#endif
-}
-
 PYBIND11_INLINE void add_class_method(object &cls, const char *name_, const cpp_function &cf) {
     cls.attr(cf.name()) = cf;
     if (std::strcmp(name_, "__eq__") == 0 && !cls.attr("__dict__").contains("__hash__")) {

include/pybind11/pybind11.h

diff --git a/include/pybind11/pybind11.h b/include/pybind11/pybind11.h
index c1c00fb..9cb8aee 100644
--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -958,7 +958,27 @@
     T::operator delete(p, s);
 }
 
-void call_operator_delete(void *p, size_t s, size_t a);
+// Stays inline: it depends on the C++ standard (aligned and sized deallocation), which can
+// differ between the precompiled library and the module that allocated the object.
+inline void call_operator_delete(void *p, size_t s, size_t a) {
+    (void) s;
+    (void) a;
+#if defined(__cpp_aligned_new)
+    if (a > __STDCPP_DEFAULT_NEW_ALIGNMENT__) {
+#    ifdef __cpp_sized_deallocation
+        ::operator delete(p, s, std::align_val_t(a));
+#    else
+        ::operator delete(p, std::align_val_t(a));
+#    endif
+        return;
+    }
+#endif
+#ifdef __cpp_sized_deallocation
+    ::operator delete(p, s);
+#else
+    ::operator delete(p);
+#endif
+}
 
 void add_class_method(object &cls, const char *name_, const cpp_function &cf);