source_store populator: fix reload broadcast, macro watch, and typing

Three review fixes to the populator:

- Reload broadcast: send_reload_notification does a bare kombu exchange
  publish that never declares the active-process queues, so on the kombu
  sqlalchemy transport (a common default) the shed-install broadcast never
  reaches peers — their cached index stays stale until restart. Add
  _broadcast_reload, which routes through send_control_task (correct
  declare_queues, derived from the worker_process table) when an app is in
  hand; the app-less CLI keeps the best-effort raw publish. Thread app
  through populate_store_inline / populate_for_paths / reconcile_index and
  the shed-install, ad-hoc self-heal, and reset_shed_tools call sites.

- Macro watch: a changed macros file left its importing tools with stale
  expanded content because the watcher filtered "macro" out by filename.
  Accept every .xml and, on a <macros> root, re-expand the tool siblings
  in its directory.

- Typing: annotate build_index_entry_from_source (ToolSource / stored /
  discovered) and drop the redundant hasattr guards the ABC already
  guarantees (parse_uuid stays guarded — it is XML-only).

Claude-Session: https://claude.ai/code/session_018L7ZmCv2ubKA3JNeSL8Pkr

lib/galaxy/tool_shed/galaxy_install/tools/tool_panel_manager.py

@@ -180,10 +180,12 @@ class ToolPanelManager:
                         paths=list(new_path_guids),
                         rebuild_whoosh=True,
                         path_guids=new_path_guids,
+                        app=self.app,
                     )
-                    # Refresh THIS process synchronously; the AMQP broadcast
-                    # above only reaches peers asynchronously, but the install
-                    # response should reflect the new tools immediately.
+                    # Refresh THIS process synchronously; the control-task
+                    # broadcast above only reaches peers asynchronously, but
+                    # the install response should reflect the new tools
+                    # immediately.
                     self.app.toolbox.invalidate_index_cache()
                 # Wire the new tools into the in-memory panel; ``create_tool``
                 # finds them in the index and hands back ``LazyTool`` stubs.

lib/galaxy/tools/lazy_toolbox.py

@@ -909,6 +909,7 @@ class LazyToolBox(ToolBox):
                 self.app.config,
                 [path],
                 path_guids={path: guid},
+                app=self.app,
             )
         except Exception as e:
             log.warning("Ad-hoc populate for %s raised: %s", path, e)

lib/galaxy_test/driver/uses_shed.py

@@ -91,7 +91,7 @@ class UsesShed(UsesShedApi):
         # would otherwise survive the ``reload_toolbox`` below: ``LazyToolBox``
         # only re-runs the populator when discovery turns up a *new* path.
         try:
-            reconcile_index(self._app.config, rebuild_whoosh=True)
+            reconcile_index(self._app.config, rebuild_whoosh=True, app=self._app)
         except Exception as e:
             log.warning("reset_shed_tools: reconcile_index raised (continuing): %s", e)
         # deleting the containing folder doesn't trigger a toolbox reload, so signal it now and wait until it's done