Question: If Akane became a lesbian, would she be attracted to Ranma-Chan?

Hitomi Ichinohei is writing this one.

In this one, Akane is THOUGHT to be lesbian by the Furinkan Student Body
when Ranma-chan claims to be her fiancee in Kunou's face (in front of the
school building). Ranma came in she-mode because of a plot hatched to get
rid of their engagement.

No, read it more carefully.  "plot to get rid of the engagement" is the excuse
that Akane gives, and Ranma falls for it.