Cluster Autoscaler doesn't support old RRSA ENV Variable

[maximrub]

Which component are you using?:
/area cluster-autoscaler

What version of the component are you using?:

Component version:

Cluster Autoscaler 1.32.1

What environment is this in?:

Alibaba Cloud

What did you expect to happen?:

Support both the old "ALICLOUD_OIDC_TOKEN_FILE_PATH" and the new "ALIBABA_CLOUD_OIDC_TOKEN_FILE" env variables for RRSA

What happened instead?:
Only the new "ALIBABA_CLOUD_OIDC_TOKEN_FILE" env variable is supported, when using the old "ALICLOUD_OIDC_TOKEN_FILE_PATH" env variable the RRSA authentication fails.

How to reproduce it (as minimally and precisely as possible):
Configure the autoscaler using the old "ALICLOUD_OIDC_TOKEN_FILE_PATH" env variable.