I see what you mean. I gave it a try anyway and the minimum temperature on mine is 24c (75.2f) which is only .5c above where my comfort setting is anyway. In that case the only thing that I can suggest is to use the script editor at home.google.com to create a script that will change the thermostat set point to your desired temperature whenever it get's set above your desired temperature. It takes some effort to learn the editor but it's worth it for the control it gives you and it does a good job of prompting you for inputs. You could try the AI help me script from a prompt but in my experience, that can be hit or miss with the scripts it builds and even if it's a hit, you'll still have to do some manual editing of it.
Below is an example script of where I started with the prompt "Adjust my thermostat to 24c when it is set above 24c but only between the hours of 8am and 5pm and the thermostat is set to cool mode" I had to do a couple of edits to the results get it to verify but something like this should work for you. Don't try to copy and paste the code below as the indentations are all off and the script editor wouldn't know what to do with it.
metadata:
name: Thermostat temperature
description: adjust thermostat
automations:
- starters:
- type: device.state.TemperatureSetting
device: Zone 1 - Dining Room
state: thermostatTemperatureSetpoint
greaterThan: 24
condition:
type: and
conditions:
- type: time.between
after: 8:00
before: 17:00
- type: device.state.TemperatureSetting
device: Zone 1 - Dining Room
state: thermostatMode
is: cool
actions:
- type: device.command.ThermostatTemperatureSetpoint
devices:
- Zone 1 - Dining Room
thermostatTemperatureSetpoint: 24
