UE5.7 fix for `UE-270589` causes held inputs to always re-trigger

Development Programming & Scripting
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https://github.com/EpicGames/UnrealEngine/commit/c57f0412770218344952b2450cc7258a33ae8fd3

  1. Create a boolean InputAction configured in an InputMappingContext with a “Pressed” trigger
  2. Bind to the ETriggerEvent::Triggered event. When this event fires, call AddMappingContext with another IMC
  3. ETriggerEvent::Triggered will now start firing every frame while the button is still held. This contradicts the bIgnoreAllPressedKeysUntilReleaseOnRebuild setting.