Updating a block's label on the web-gui doesn't update the PV

[olliesilvester]

If I change the label for, eg, the CLOCK1 block on the panda's web-gui, the corresponding PV doesn't appear to update. I'm not sure if this is only limited to the label PV's, but it's the only one I've noticed it for

Steps To Reproduce

Steps to reproduce the behavior:

1. With a PandA connected to an IOC, do caget -S [IOC-NAME]:CLOCK1:LABEL
2. Change CLOCK1 label via a panda's web-gui, while it is has an active IOC
3. Run caget -S [IOC-NAME]:CLOCK1:LABEL again and confirm value doesn't change

Acceptance Criteria

• Fix implemented

[coretl]

@evalott100 if this is fixed in FastCS PandA then we can state that here and close this as not planned, but we should make sure there is a test for it in FastCS PandA

[coretl]

The following appears on the IOC console:

ERROR:Unknown field *METADATA:LABEL_PULSE1 returned from GetChanges values
ERROR:Unknown field *METADATA:LABEL_PULSE1 returned from GetChanges values
ERROR:Unknown field *METADATA:LABEL_PULSE1 returned from GetChanges values
ERROR:Unknown field *METADATA:LABEL_PULSE1 returned from GetChanges values
ERROR:Unknown field *METADATA:LABEL_CLOCK1 returned from GetChanges values

[evalott100]

The following appears on the IOC console:

Ah if I had to guess it'll be a problem with passing metadata from the ioc to label records post introspection. I'll take a look this afternoon.