devel/iaito: Update 6.0.8 => 6.1.8, fix build with new devel/radare2

Changelogs:
https://github.com/radareorg/iaito/releases/tag/6.1.0
https://github.com/radareorg/iaito/releases/tag/6.1.2
https://github.com/radareorg/iaito/releases/tag/6.1.4
https://github.com/radareorg/iaito/releases/tag/6.1.6
https://github.com/radareorg/iaito/releases/tag/6.1.8

• Refresh patches.

PR: 296680 296678
Sponsored by: UNIS Labs
MFH: 2026Q3