This commit fixes an undetected merge conflict between PRs #61745 and #60159. The dencoding problem has been introduced very recently, it is straightforward and causes failures of the make check bot everywhere, therefore -- if no objections -- I want to merge this patch without the Teuthology testing.

/home/jenkins-build/build/workspace/ceph-pull-requests/src/rgw/rgw_zone_types.h:650:21: error: call to consteval function 'StructVChecker<'\x03'>::CheckingWrapper::CheckingWrapper' is not a constant expression
  650 |     if (struct_v >= 4) {
      |                     ^
/home/jenkins-build/build/workspace/ceph-pull-requests/src/include/denc.h:1804:7: note: subexpression not valid in a constant expression
 1804 |       consteval_assert(
      |       ^~~~~~~~~~~~~~~~~
 1805 |         c <= MaxV,
      |         ~~~~~~~~~~
 1806 |         "checking against higher version than declared in DECODE_START");
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/jenkins-build/build/workspace/ceph-pull-requests/src/include/ceph_assert.h:150:7: note: expanded from macro 'consteval_assert'
  150 |       throw (msg);                      \
      |       ^~~~~~~~~~~
/home/jenkins-build/build/workspace/ceph-pull-requests/src/rgw/rgw_zone_types.h:650:21: note: in call to 'CheckingWrapper(4)'
  650 |     if (struct_v >= 4) {
      |                     ^
1 error generated.

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