PyDM EnumCombobox widget emits spurious error

[canismarko]

Describe the bug

In some cases, the pydm enum combobox when used with an ophyd-async signal will report that

[2024-12-16 10:04:50,734] [ERROR ] - Can not change value to <ScanInterval.SCAN_0_1: '.1 second'>. Not an option in PyDMComboBox

The ".1 second" option comes from the IOC itself (it is the current PV value). ".1 second" is a valid option, so this should work. When the display window is visible, the correct value is set in the combobox, so I think this is just a spurious error.

To Reproduce
Steps to reproduce the behavior:

1. Launch Firefly
2. Open the window for a single ion chamber
3. Check the firefly console to see the error coming from the labjack scan interval

Expected behavior
No error should be emitted since the value ".1 second" is valid

Screenshots
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