Arguably depends on what it actually is. If the toilet is freshly drained and the ground crew just over-serviced the juice, it's gonna be 99% water and the blue disinfectant additive. I still wouldn't touch it but there's no turds floating down the aisle in that scenario.

But it is still corrosive and can fuck up structure, electronic components, etc. Below is what happens when you let it sit on structure and as a bonus you've got a bonding/grounding point nearby that probably charges the metal and accelerates the corrosion. This was directly beside a leaking drain under the lavatory.

That structure got completely removed and replaced.

Gotta clean ALL of it up. Tear things apart, inspect to find where it's spread to, perhaps dilute with fresh water to flush it out of places. Dry everything. Replace the carpet to get the soiled one cleaned. Juice on any connector means disconnecting it and cleaning it thoroughly, perhaps replacing components. Doubt this plane's going anywhere for a while.