KT-70888 Fix PI PropertiesProvider access to project.properties
diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
index 3fdaf43..e985ac9 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
@@ -594,7 +594,7 @@
 
     private fun propertiesWithPrefix(prefix: String): Map<String, String> {
         val result: MutableMap<String, String> = mutableMapOf()
-        project.properties.forEach { (name, value) ->
+        project.extensions.extraProperties.properties.forEach { (name, value) ->
             if (name.startsWith(prefix) && value is String) {
                 result[name] = value
             }