Maya manipulators ignore rotate/scale center options on usd objects

[jufrantz]

Describe the bug

Maya rotate and scale manipulators on usdUfe objects ignore rotate/scale center options. Transformation is always applied about each object pivot.

Steps to reproduce

1. Create a mayaUsd proxyShape with xformable prims.

import maya.cmds
import mayaUsd.ufe
import mayaUsd_createStageWithNewLayer

maya.cmds.loadPlugin("mayaUsdPlugin", quiet=True)

proxyShape = mayaUsd_createStageWithNewLayer.createStageWithNewLayer()
shapeStage = mayaUsd.ufe.getStage(proxyShape)

shapeStage.GetRootLayer().ImportFromString('''#sdf 1
def Sphere "Sphere" 
{
}
def Cube "Cube" 
{
    double3 xformOp:translate = (5, 0, 0)
    uniform token[] xformOpOrder = ["xformOp:translate"]
}
''')

2. Select Sphere then Cube prims and activate rotate manip.

maya.cmds.select(f"{proxyShape},/Sphere", f"{proxyShape},/Cube")
maya.cmds.setToolTo("RotateSuperContext")

3. Set Rotate Center to Manip in tool settings or with manipRotateContext command.

maya.cmds.manipRotateContext("Rotate", e=True, useManipPivot=True, useObjectPivot=False, useCenterPivot=False)

4. Manipulate and notice Sphere is not rotated about Cube's pivot as expected.

5. Set it now to Selection

maya.cmds.manipRotateContext("Rotate", e=True, useCenterPivot=True, useObjectPivot=False, useManipPivot=False)

6. Notice prims are not rotated about selection's center as expected.

Specs (if applicable):

• CentOS 7.8
• Maya 2023.3
• maya-usd 0.25
• USD 22.11

[maya-usd-git-sync]

Issue synced internally to EMSUSD-839