Upgrade Room Gradle Plugin the latest version that is a HEAD.

Also updates the KMP test app to use the plugin.

Bug: 299168035
Test: Existing tests
Change-Id: Ib265171d9ce66d36682bb8f07738520f1521f8eb
diff --git a/buildSrc/settings.gradle b/buildSrc/settings.gradle
index 68c8582..4abc377 100644
--- a/buildSrc/settings.gradle
+++ b/buildSrc/settings.gradle
@@ -22,6 +22,7 @@
 include ":imports:benchmark-darwin-plugin"
 include ":imports:baseline-profile-gradle-plugin"
 include ":imports:inspection-gradle-plugin"
+include ":imports:room-gradle-plugin"
 include ":imports:compose-icons"
 include ":imports:glance-layout-generator"
 include ":imports:stableaidl-gradle-plugin"