Refactor onquery node and add defaults and asserts

[SYBIOTE]

This pull request simplifies the onquery node, adds defaults and asserts for nodes, and improves onquery iteration. The changes include:

• Added Assert to getSpline node to ensure a spline entity is selected

• Added default values to videoFit and audioMode nodes

• Renamed getAvatarAnimations to getAnimationPack

• Added default values to setAnimationAction node

• Added default values to addEntity node for componentName and parentEntity

• Improved deleteEntity node by adding a dropdown menu for entity selection

No issues were fixed in this pull request.

[anselm]

this seems to work

gheric suggests we find a way to remove the delay loop - but that can happen later

i do think the delay could be abstracted away from here in some way - but whatever works