gh-94673: Add _PyStaticType_InitBuiltin() (#95152)

This is the first of several precursors to storing tp_subclasses (and tp_weaklist) on the interpreter state for static builtin types.

We do the following:

* add `_PyStaticType_InitBuiltin()`
* add `_Py_TPFLAGS_STATIC_BUILTIN`
* set it on all static builtin types in `_PyStaticType_InitBuiltin()`
* shuffle some code around to be able to use _PyStaticType_InitBuiltin()
    * rename `_PyStructSequence_InitType()` to `_PyStructSequence_InitBuiltinWithFlags()`
    * add `_PyStructSequence_InitBuiltin()`.

1 files changed, 1 insertions, 2 deletions

diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index 9aab683..e06a8f4 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -3556,8 +3556,7 @@ _PyExc_InitTypes(PyInterpreterState *interp)
 
     for (size_t i=0; i < Py_ARRAY_LENGTH(static_exceptions); i++) {
         PyTypeObject *exc = static_exceptions[i].exc;
-
-        if (PyType_Ready(exc) < 0) {
+        if (_PyStaticType_InitBuiltin(exc) < 0) {
             return -1;
         }
     }