Moved the 'ui-backhandler' dependency from commonMain to skikoMain in the ui module. (#2021)

## Release Notes
N/A

Author: terrakok

compose/ui/ui/build.gradle

@@ -173,7 +173,6 @@ if(AndroidXComposePlugin.isMultiplatformEnabled(project)) {
                 api project(":compose:ui:ui-text")
                 api project(":compose:ui:ui-unit")
                 api project(":compose:ui:ui-util")
-                implementation(project(":compose:ui:ui-backhandler"))
                 api("org.jetbrains.androidx.lifecycle:lifecycle-common:2.8.4")
                 implementation("org.jetbrains.androidx.lifecycle:lifecycle-runtime:2.8.4")
                 implementation("org.jetbrains.androidx.lifecycle:lifecycle-runtime-compose:2.8.4")
@@ -209,6 +208,7 @@ if(AndroidXComposePlugin.isMultiplatformEnabled(project)) {
                     api(project(":compose:ui:ui-text"))
                     api(libs.skikoCommon)
                     implementation(libs.atomicFu)
+                    implementation(project(":compose:ui:ui-backhandler"))
                 }
             }
             uikitMain {