Improve handling for token.{LEQ,GEQ} for constant-logical-expr lint

[shmsr]

Describe the bug
From revive/testdata/constant-logical-expr.go:

func foo3(f float64) bool { return f <= f } // MATCH /expression always evaluates to false/

func foo4(f float64) bool { return f >= f } // MATCH /expression always evaluates to false/

But, for a binary expression with both operands being equal, it is expected that token.{EQL,LEQ,GEQ} should return true instead of false.

To Reproduce
Look at the testdata/constant-logical-expr.go and the implementation for constant-logical-expr. No need to reproduce it as it can be seen clearly from the example I've presented.

Expected behavior

func foo3(f float64) bool { return f <= f } // MATCH /expression always evaluates to true/

func foo4(f float64) bool { return f >= f } // MATCH /expression always evaluates to true/

Desktop (please complete the following information):

• OS: Mac OSX
• Go 1.17.6

[chavacava]

Hi @shmsr, thanks for filling the issue and for the PR