They will also care about equal opportunities for all students, so I would make a big deal about how this affects Muslim students.
It will not just be some Muslim women students affected. It will also quite obviously and predictably be for any college with the faintest scooby about inclusion:
Some Orthodox Jewish women
Some Gypsy/Roma/Traveller women
Some Women with Autism
Some Women with trauma who are survivors of abuse, DV, DA, VAWG and CSA
Some Women with PTSD
Some physically disabled women who may struggle to close doors
Some women on site with young children who may struggle to close doors
And that's aside from women who just want dignity, privacy and cannot use a space where male people are regardless of how the male person chooses to identify or the male person's feelings because the female person wanting the loo is there to meet their needs, not to provide care for the male person.
Those women, in percentage of population, are likely to be significantly higher than the percentage of male people requiring an alternative space to the male provision, so a reason would be needed as to why this small proportion of male people are provided for but the larger percentage of female people not? Direct discrimination on basis of sex.
Failure to anticipate and provide for obvious inclusion and access needs of females in women's facilities? Also discriminatory.
The whole point of women's facilities is that they must include and be accessible to all women. Not just the ones who were born male.