chore: use coreml version of rf detr on iOS

[NorbertKlockiewicz]

Description

Use rf detr exported to coreml on iOS devices.

Also there was a false information in docs that for object detection rf detr was exported with a size of 312 while the true input size is 384x384

Introduces a breaking change?

• Yes
• No

Type of change

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Documentation update (improves or adds clarity to existing documentation)
• Other (chores, tests, code style improvements etc.)

Tested on

• iOS
• Android

Testing instructions

Screenshots

Related issues

Checklist

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes generate no new warnings

Additional notes

[msluszniak]

About this size of rf-detr from where you get this information, please check out this one: #1020

[NorbertKlockiewicz]

About this size of rf-detr from where you get this information, please check out this one: #1020

I checked the shape of model forward function, also for object detection the native size is 384, for segmentation it's 312.