Also fix ?-> on magic consts in const expressions

Fixes GH-9136
Fixes GH-9138

Author: iluuu1994

Zend/tests/gh9136_2.phpt

@@ -0,0 +1,10 @@
+--TEST--
+GH-9136: Assertion when fetching property of magic constant in constant expression with nullsafe operator
+--FILE--
+<?php
+
+const C = __file__?->foo;
+
+?>
+--EXPECTF--
+Warning: Attempt to read property "foo" on string in %s on line %d

Zend/tests/gh9138_2.phpt

@@ -0,0 +1,11 @@
+--TEST--
+GH-9138: NULL pointer dereference when fetching property of "bad" list in constant expression with nullsafe operator
+--FILE--
+<?php
+
+#[Attribute([,]?->e)]
+class Foo {}
+
+?>
+--EXPECTF--
+Fatal error: Cannot use empty array elements in arrays in %s on line %d

Zend/zend_compile.c

@@ -10631,6 +10631,7 @@ static void zend_eval_const_expr(zend_ast **ast_ptr) /* {{{ */
 			zend_eval_const_expr(&ast->child[2]);
 			return;
 		case ZEND_AST_PROP:
+		case ZEND_AST_NULLSAFE_PROP:
 			zend_eval_const_expr(&ast->child[0]);
 			zend_eval_const_expr(&ast->child[1]);
 			return;