Max IOB limits not informing user

[Descent098]

When adding in a max IOB the hardcoded limits specified here are not triggering a message when exceeded.

Reproduction steps

1. Be in loop mode (for me it SMB)
2. Go to preferences --> OpenAPS SMB --> Maximum total IOB OpenAPS can't go over [U]
3. Set this value to one higher than the table
4. Value is silently turned down to the limit without warning user (As confirmed by going to the OPENAPS SMB page and looking at max_iob)

So for example if you set it to 38 while your patient type is Insulin Resistant Adult, it will be turned down to 30 without any notification. Importantly it still visually shows up as 38 in the settings, even though it's being turned down to 30.

Extra info
Patient type was set to Insulin Resistant Adult if that helps

Build version: fe9789d-2026.04.07

I also created a PR to link to those limits from the summary #4699 4699 to come shortly

[Descent098]

I unfortunately am not familiar enough with the codebase to fix the primary issue.

But, after a bit of playing around it seems like potentially some good places might be the max value here overriding everything:

• https://github.com/nightscout/AndroidAPS/blob/master/core/keys/src/main/kotlin/app/aaps/core/keys/DoubleKey.kt#L30

or something in here:

• https://github.com/nightscout/AndroidAPS/blob/master/plugins/aps/src/main/kotlin/app/aaps/plugins/aps/openAPSSMB/OpenAPSSMBPlugin.kt#L426

I'm just not familiar enough with either to know what/how to update this to do a warning, or at least visually show the corrected value