Controller Metric missing a critical dot in it

Right now the latest controller metric is missing one dot in its name, making them not easy to read:
```
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerInstanceDeleteError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerInstancePostError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerLeaderPartitionCount",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerLeadershipChangeWithoutCallback",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerRealtimeTableSegmentAssignmentError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerSchemaUploadError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerSegmentUploadError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableAddError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableSchemaUpdateError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableTenantCreateError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableTenantDeleteError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableTenantUpdateError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllercontrollerTableUpdateError",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerdataDir.exists",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerdataDir.fileOpLatencyMs",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerdisabledTableCount",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerhealthcheckBadCalls",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerhealthcheckOkCalls",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerhelix.connected",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerhelix.leader",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerhelixZookeeperReconnects",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllernumberOfReplicas.point_transaction_entry_rt_REALTIME",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllernumberSegmentUploadTimeoutExceeded",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllernumberTimesScheduleTasksCalled",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerofflineTableCount",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerpercentOfReplicas.point_transaction_entry_rt_REALTIME",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerpercentSegmentsAvailable.point_transaction_entry_rt_REALTIME",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerperiodicTaskNumTablesProcessed",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerpinotControllerLeader",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerpinotLeadControllerResourceEnabled",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllerrealtimeTableCount",type="ControllerMetrics"
"org.apache.pinot.common.metrics":name="pinot.controllersegmentsInErrorState.point_transaction_entry_rt_REALTIME",type="ControllerMetrics"
```
For example pinot.**controllercontrollerInstancePostError** should have a "dot" in it, making pinot.controller.controllerInstancePostError

Start by locating the ControllerMetrics definitions that produce the listed metric names and compare their prefix construction with correctly dotted metrics. Add the missing separator so names such as pinot.controllercontrollerInstancePostError become pinot.controller.controllerInstancePostError, then verify the listed ControllerMetrics names.

Written by the indexing model from the issue text.