text: Launch input method in text_backend_init

Previously we tried to launch the input method every time a seat was
created, and the launch function would notice it was running and not
bother to actually launch.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
diff --git a/src/text-backend.c b/src/text-backend.c
index cd6c4d99..c018803 100644
--- a/src/text-backend.c
+++ b/src/text-backend.c
@@ -1005,8 +1005,6 @@
 	wl_signal_add(&seat->destroy_signal, &input_method->destroy_listener);
 
 	seat->input_method = input_method;
-
-	launch_input_method(text_backend);
 }
 
 static void
@@ -1071,5 +1069,7 @@
 
 	text_input_manager_create(ec);
 
+	launch_input_method(text_backend);
+
 	return text_backend;
 }