IntervalGizmo is now just registered and unregistered as needed by the MeshSpaceDeformerTool, as this is the only place it is currently used.
Previous implementation in InteractiveGizmoManager is left intact as there are a few uses outside of MeshModelingTools that need to be cleaned up before it can be deleted.
UTransformGizmo now requires it's Builder to tell it which sub-gizmo identifier strings to pass to the GizmoManager to create axis/plane/rotation sub-gizmos (and the code that registers the Builder must then provide these strings). This cleans up previous explicit references to UInteractiveGizmoManager static strings from UTransformGizmo.
#rb Christina.TempelaarL, david.hill
#rnx
#jira none
[CL 16409673 by Ryan Schmidt in ue5-main branch]
ModelingTools: Expose Simplify To Minimal Planar simplification mode in Simplify Tool. Add edge filter to this simplification mode in TMeshSimplification. Add support for returning all edges along intersection curves in FMeshBoolean and FMeshSelfUnion. Add option BooleanMeshesOp and SelfUnionMeshesOp to apply minimal-planar simplification along these cut/intersection edges. Expose as toggles in CSGMeshesTool and SelfUnionMeshesTool
#rb jimmy.andrews
#rnx
#jira none
[CL 14890297 by Ryan Schmidt in ue5-main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12986453 via CL 12986455 via CL 12986457
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12986458 by jimmy andrews in Main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12972560 via CL 12972561 via CL 12972564
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12972566 by jimmy andrews in Main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12941529 via CL 12941533 via CL 12941542
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12941546 by jimmy andrews in Main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12940885 via CL 12940886 via CL 12940891
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12940893 by jimmy andrews in Main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12908995 via CL 12908996 via CL 12909001
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12909003 by ryan schmidt in Main branch]
