FieldControlAriaOptions

Disabled-reason aria-describedby gating. The reason id is appended only while the control is disabled with a reason. accname 1.2 §2A traverses a directly-referenced hidden node, so emitting the id whenever a reason is merely set would announce the reason on an enabled control (a disabledReason bound statically while disabled is false), the same gating CngxCard uses.

Host id when no surrounding field supplies one. Default ''.

Control-local disabled knob OR'd with the field's disabled state (the CngxRating / CngxPhoneInput pattern). Omit for bridges whose disabled derives from the field alone.