chore(deps): update react to v19.0.0-pre.860

Author: renovate[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ ktor = "2.3.13"
 kotlin = "2.1.21"
 mockito = "5.15.2"
 protelis = "17.7.5"
-react = "19.0.0-pre.854"
+react = "19.0.0-pre.860"
 scafi = "1.6.0"
 scala = "2.13.16"
 scalacache = "0.28.0"