Move DefaultLifecycleObserver from lifecycle-common-java8 to lifecycle-common

Relnote: "DefaultLifecycleObserver was moved from `androidx.lifecycle.lifecycle-common-java8` to
`androidx.lifecycle.lifecycle-common`. `androidx.lifecycle.lifecycle-common-java8` doesn't provide anymore any additional functionality on top of `androidx.lifecycle.lifecycle-common`, so dependency on it can be replaced by `androidx.lifecycle.lifecycle-common`."
Test: N/A

Change-Id: I021aab3f3b3493e97775757b5aa307c494690b40
diff --git a/lifecycle/lifecycle-common/build.gradle b/lifecycle/lifecycle-common/build.gradle
index 98f2da4..1a93cb7 100644
--- a/lifecycle/lifecycle-common/build.gradle
+++ b/lifecycle/lifecycle-common/build.gradle
@@ -27,6 +27,10 @@
 
     testImplementation(libs.junit)
     testImplementation(libs.mockitoCore)
+
+    constraints {
+        implementation(project(":lifecycle:lifecycle-common-java8"))
+    }
 }
 
 androidx {