[Gradle] Mark sourcesElements configurations as non-consumable

In case if `isSourcesPublishable` set to false.

^KT-57652 Verification Pending

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinTargetConfigurator.kt

@@ -201,16 +201,13 @@ abstract class AbstractKotlinTargetConfigurator<KotlinTargetType : KotlinTarget>
             }
         }
 
-        project.whenEvaluated {
-            if (target.internal.isSourcesPublishable) {
-                configurations.maybeCreate(target.sourcesElementsConfigurationName).apply {
-                    description = "Source files of main compilation of ${target.name}."
-                    isVisible = false
-                    isCanBeResolved = false
-                    isCanBeConsumed = true
-                    configureSourcesPublicationAttributes(target)
-                }
-            }
+        configurations.maybeCreate(target.sourcesElementsConfigurationName).apply {
+            description = "Source files of main compilation of ${target.name}."
+            isVisible = false
+            isCanBeResolved = false
+            isCanBeConsumed = true
+            configureSourcesPublicationAttributes(target)
+            project.whenEvaluated { isCanBeConsumed = target.internal.isSourcesPublishable }
         }
 
         if (createTestCompilation) {

libraries/tools/kotlin-gradle-plugin/src/functionalTest/kotlin/org/jetbrains/kotlin/gradle/unitTests/MppPublicationTest.kt

@@ -202,14 +202,26 @@ class MppPublicationTest {
     }
 
     @Test
-    fun `test that no sourcesElements should be exposed when sources are not published`() {
+    fun `test that no sourcesElements should be consumable when sources are published`() {
+        kotlin.linuxX64("linux")
+        kotlin.withSourcesJar(publish = true)
+
+        project.evaluate()
+        kotlin.targets.forEach {
+            val sourcesElements = project.configurations.getByName(it.sourcesElementsConfigurationName)
+            if (!sourcesElements.isCanBeConsumed) fail("Configuration '${it.sourcesElementsConfigurationName}' should be consumable")
+        }
+    }
+
+    @Test
+    fun `test that no sourcesElements should be consumable when sources are not published`() {
         kotlin.linuxX64("linux")
         kotlin.withSourcesJar(publish = false)
 
         project.evaluate()
         kotlin.targets.forEach {
-            if (it.sourcesElementsConfigurationName in project.configurations.names)
-                fail("Configuration '${it.sourcesElementsConfigurationName}' should not be created")
+            val sourcesElements = project.configurations.getByName(it.sourcesElementsConfigurationName)
+            if (sourcesElements.isCanBeConsumed) fail("Configuration '${it.sourcesElementsConfigurationName}' should not be consumable")
         }
     }