Operator Slot's label are truncated

Steps to reproduce:

1. Open a VFX in 6000.3.0b1
2. Create an operator like Get Position or Sample Noise.
3. Observe the label of each slots in the operators

Actual results: The Label of the slots are tuncated with ...

Expected results: The label should be displayed fully.

Reproducible with versions: 6000.30b1

Not reproducible with versions: 6000.2.3f1

Can’t test with versions: 

Tested on (OS): 

Notes:

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