Make CHECK_PERIODIC an instruction, not just a uop.

Author: markshannon

Include/internal/pycore_magic_number.h

@@ -281,6 +281,7 @@ Known values:
     Python 3.15a1 3651 (Simplify LOAD_CONST)
     Python 3.15a1 3652 (Virtual iterators)
     Python 3.15a1 3653 (Fix handling of opcodes that may leave operands on the stack when optimizing LOAD_FAST)
+    Python 3.15a2 3654 (Add CHECK_PERIODIC opcode)
 
 
     Python 3.16 will start with 3700
@@ -294,7 +295,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3653
+#define PYC_MAGIC_NUMBER 3654
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \