`Range#===` should not accept range argument

[takaram]

Environment Information

jruby 9.3.3.0 (2.6.8) 2022-01-19 b26de1f5c5 OpenJDK 64-Bit Server VM 11.0.13+8-Ubuntu-0ubuntu1.18.04 on 11.0.13+8-Ubuntu-0ubuntu1.18.04 +jit [linux-x86_64]

Expected Behavior

Unlike Range#cover?, Range#=== does not accept range arguments.

# MRI 2.6.9
p (1..10).cover?(2..3) #=> true
p (1..10) === (2..3) #=> false

Actual Behavior

(1..10) === (2..3) returns true.

[headius]

This appears to be the behavior as far back as 1.8.7.