Add checks that kotlin-native.swift-export.enabled is actually turned on

Merge-request: KT-MR-13506
Merged-by: Artem Olkov <artem.olkov@jetbrains.com>

plugins/swift-export/build.gradle.kts

@@ -39,7 +39,7 @@ sourceSets {
 
 optInToExperimentalCompilerApi()
 
-if (project.hasProperty("kotlin-native.swift-export.enabled")) {
+if (project.kotlinBuildProperties.isSwiftExportPluginPublishingEnabled) {
     // todo: is you are removing this check - don't forget to run tests in repo/artifacts-tests/src/test/kotlin/org/jetbrains/kotlin/code/ArtifactsTest.kt
     publish()
 }

plugins/swift-export/swift-export.embeddable/build.gradle.kts

@@ -6,7 +6,8 @@ dependencies {
     embedded(project(":kotlin-swift-export-compiler-plugin")) { isTransitive = false }
 }
 
-if (project.hasProperty("kotlin-native.swift-export.enabled")) {
+if (project.kotlinBuildProperties.isSwiftExportPluginPublishingEnabled) {
+    // todo: is you are removing this check - don't forget to run tests in repo/artifacts-tests/src/test/kotlin/org/jetbrains/kotlin/code/ArtifactsTest.kt
     publish {
         artifactId = "kotlin-swift-export-compiler-plugin-embeddable"
     }

repo/gradle-build-conventions/buildsrc-compat/src/main/kotlin/BuildPropertiesExt.kt

@@ -59,3 +59,6 @@ val KotlinBuildProperties.useFirWithLightTree: Boolean
 
 val KotlinBuildProperties.useFirTightIC: Boolean
     get() = getBoolean("kotlin.build.useFirIC")
+
+val KotlinBuildProperties.isSwiftExportPluginPublishingEnabled: Boolean
+    get() = getBoolean("kotlin-native.swift-export.enabled")