[BUG] Static Switch Parameter Dynamic Branch option is missing in UE5.5.4

General Feedback & Requests
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The Dynamic Branch option is missing entirely in UE 5.5.4.
Screenshots:

UE5.4.4:

UE5.4_DB
UE5.4_DB469×334 34 KB

UE5.5.4 (latest):

UE5.5_DB
UE5.5_DB451×279 23.8 KB

The option is missing from both the Static Bool Parameter and the Static Switch Parameter expression nodes.
This is causing big problems for existing shader libraries.