proxyAccessor can not communicate with USD 2Float

**Describe the bug**
We are loving and using the python module "mayaUsd.lib.proxyAccessor" a lot to in/out usd data, to maya objects.

As mentioned here: https://github.com/Autodesk/maya-usd/discussions/1881
with the function "getOrCreateAccessPlug(ufeObject, usdAttribute, sdfValueType)" there was an issue with "float" values, tha already have been resolved.

What still does not work are:
* FLOAT2

untestet:
DOUBLE2, INT2, INT3

What would be nice, but maya does not support It by default:
FLOAT4, DOUBLE4

**Steps to reproduce**
Steps to reproduce the behavior:
1. GLoad a USD stage with a camera inside
2. use the "mayaUsd.lib.proxyAccesso.getOrCreateAccessPlug(ufeObject, usdAttribute, sdfValueType)" function to get the camras "clippingRange" attribute
3. Watch at the USD Proxy Shape the promoted attribute - it will be 0.0 and does not update proberly

**Expected behavior**
At least the float 2 should work and be implemented

**Attachments**

**Specs (if applicable):**
- Linux Centos7
- Maya USD 0.20
- Maya 2022

**Additional context**
Add any other context about the problem here.