Describe the bug

👋
Sentinels should rather be compared with is but afaik == is fine as well. Currently pyright raises an issue in case a Sentinel (or a union containing one) is compared with another sentinel.

Code or Screenshots
Code sample in pyright playground

# pyright: enableExperimentalFeatures=true
from typing_extensions import Sentinel

S = Sentinel("S")
S2 = Sentinel("S2")

S == S  #reportOperatorIssue
S == S2  #reportOperatorIssue

VS Code extension or command-line
playground 1.1.403