[IMP] registry: less invalidation log

The number of invalidation during the test is quite large and
the crons cal also spam this log sometimes.

Waiting for further cleanup, removing this log to avoid spaming runbot
logs and making them harder to read.

closes odoo/odoo#128921

Signed-off-by: Xavier Dollé (xdo) <xdo@odoo.com>

odoo/modules/registry.py

@@ -708,9 +708,11 @@ class Registry(Mapping):
             self.cache_invalidated.add(cache_name)
 
         # log information about invalidation_cause
-        caller_info = format_frame(inspect.currentframe().f_back)
-        log = _logger.info if self.loaded else _logger.debug
-        log('Invalidating %s model caches from %s', ','.join(cache_names), caller_info)
+        if _logger.isEnabledFor(logging.DEBUG):
+            # could be interresting to log in info but this will need to minimize invalidation first,
+            # mainly in some setupclass and crons
+            caller_info = format_frame(inspect.currentframe().f_back)
+            _logger.debug('Invalidating %s model caches from %s', ','.join(cache_names), caller_info)
 
     def clear_all_caches(self):
         """ Clear the caches associated to methods decorated with