[MPP] Don't report HMPP deprecation warnings on subprojects

MPP plugin applied to a root project leads to false positive reports
in its subprojects. Also, granular metadata flag is not supposed to be
set in subprojects. Reporting only for the root project should cover
most of the cases.

KT-55891

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/mppDeprecatedProperties/settings.gradle.kts

@@ -0,0 +1 @@
+include(":subproject")

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/mppDeprecatedProperties/subproject/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    kotlin("multiplatform")
+}
+
+kotlin {
+    jvm()
+}