Small changes omnibus

[LindyHopperGT]

[Flow] Reroute updates/fixes

• Reroute nodes can now retype themselves if connected to a new type (and in doing so, break incompatible connections)
• Copy/paste for data pin reroutes preserves the type of the reroute (was being lost)
  CR - JDurica, BJarvinen, ECalder

[Flow] Add Paste option to the right-click menu for flow nodes

• formerly could only paste onto a flow-node using ctrl+v.
• Now we have a right-click option for it
  CR - BJarvinen

[Flow] Added Attach AddOn drop-down to FlowNode (and AddOn) details

• Adds a more convenient method for attaching addons that is fewer-clicks per operation and a bit less hidden.
• This is in addition to the right-click menu on these nodes.
  CR - BJarvinen, ECalder

[Flow] Updated Flow Palette filters

• Improved the Flow Palette Filtering by category to also check superclasses of the UFlowAsset subclass being edited
• The palette filtering can apply a strict or tentative result, as it crawls up the superclass lineage
• Updated the categories of a few flow nodes to make them filterable created some starter flow node filtering rules for our flow asset types
  CR - BJarvinen, ECalder

[Flow] Restored the "Choose Parent Flow Asset Params" text that was lost in a Flow merge

• Mainline flow removed this text (by accident I suppose?), but it's actually necessary to tell the user why they need to select another asset params
• CR - JDurica

[Flow] AddOn Predicate RequireGameplayTags (data pin version)

• (blackboard version is in AIFlowGraph plugin)
  CR - BJarvinen, ECalder

[Flow] Refactored the IsInput/OutputConnected interface to be more useful & pin connection change event improvements - Refactored some of the variants of IsInputConnected/IsOutputConnected to be FindFirstIn/OutputPinConnection and FindIn/OutputPinConnections functions

• These new function signatures provide multiple connections when present, and also have FConnectedPin structs as their container
• Updated existing calls to these functions to use the new signatures

Also:

• Augmented the event for OnConnectionsChanged to have an array of changed connections instead of the old connections array.
• This new version (OnEditorPinConnectionsChanged) is called on all of the addons on a flow node as well, and has a blueprint signature
• This change allows nodes to be more reactive to pin connections changing (like changing their Config Text), which was possible before, but not smooth.
• Updated some flow nodes (Log, FormatText) and the new Predicates for RequireGameplayTags to update their config text on pin connection changes
  CR - ECalder, BJarvinen

[Flow] RequireGameplayTags UpdateConfigText on changes to properties

• Now it is reactive to pin connections
  CR - ECalder, BJarvinen

[Flow] Setting FlowNode pointer on AddOns more reliably in editor

• Update the FlowNode pointer in editor for AddOns so that it is usable any time while in editor, can updated when addons are moved/rebuilt
  CR - ECalder, BJarvinen