sdbusplus: object: don't use 'bool' argument constructor

`sdbusplus::server::object_t` has long had an enum-based parameter for
signal action, but maintained a backwards compatible boolean mapping.
It is time to remove this boolean to make it more observable which
actions are being used in applications.  Map all `true` occurrences to
`action::defer_emit`.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I6d8796f14e3e25c9dbf7149e9affdb3d826d220c
diff --git a/settings_manager.mako.hpp b/settings_manager.mako.hpp
index f233a7e..c344641 100644
--- a/settings_manager.mako.hpp
+++ b/settings_manager.mako.hpp
@@ -107,7 +107,7 @@
 {
     public:
         Impl(sdbusplus::bus::bus& bus, const char* path):
-            Parent(bus, path, true),
+            Parent(bus, path, Parent::action::defer_emit),
             path(path)
         {
         }