Fix "no snapshot data found" error when agent check <check> -m/--profile-memory (#19197)

* Fix namespaces for profile_memory

* changelog

* update comment

* fix lint

Author: keisku

datadog_checks_base/changelog.d/19197.fixed

@@ -0,0 +1 @@
+Fix "no snapshot data found" error when `agent check <check> --profile-memory`

datadog_checks_base/datadog_checks/base/checks/base.py

@@ -1285,7 +1285,13 @@ def run(self):
 
                     enter_pdb(self.check, line=self.init_config['set_breakpoint'], args=(instance,))
                 elif self.should_profile_memory():
-                    self.profile_memory(self.check, self.init_config, args=(instance,))
+                    # self.init_config['profile_memory'] could be `/tmp/datadog-agent-memory-profiler*`
+                    # that is generated by Datadog Agent.
+                    # If we use `--m-dir` for `agent check` command, a hidden flag, it should be same as a given value.
+                    namespaces = [self.init_config['profile_memory']]
+                    for id in self.check_id.split(":"):
+                        namespaces.append(id)
+                    self.profile_memory(func=self.check, namespaces=namespaces, args=(instance,))
                 else:
                     self.check(instance)