Wear template: Use explicit matching for has_handheld_app attr

Logic for settings.gradle's "include" directive should work properly if
wearable/has_handheld_app="false".

Change-Id: I04d39edd30d75b2a59e967db3d69abcdbed7819a
diff --git a/templates/Wear/settings.gradle.ftl b/templates/Wear/settings.gradle.ftl
index 1c15c24..1320e2f 100644
--- a/templates/Wear/settings.gradle.ftl
+++ b/templates/Wear/settings.gradle.ftl
@@ -14,7 +14,8 @@
         See the License for the specific language governing permissions and
         limitations under the License.
 -->
-<#if sample.wearable.has_handheld_app?has_content>
-include ':${meta.module}'
-</#if>
+<#if sample.wearable.has_handheld_app?has_content && sample.wearable.has_handheld_app?lower_case == "true">
+include ':${meta.module}', ':Wearable'
+<#else>
 include ':Wearable'
+</#if>
\ No newline at end of file