LazyToolBox: defer to super().to_dict for in_panel=True listings

``LazyToolBox.to_dict`` returned a flat list of every index entry
regardless of ``in_panel``. The eager ``to_dict(in_panel=True, view=X)``
walks ``tool_panel_contents`` which yields the Tools and ToolSections
captured in ``_tool_panel_view_rendered[X]`` — the section-aware
shape the UI and tests expect.

``test_only_latest_version_in_panel_fastp`` queries
``tools?in_panel=True&view=custom_13`` and expects exactly one
``ToolSection`` (test_section_multi) containing the installed
fastp. Under the lazy flat-only ``to_dict``, the response was a flat
list of every indexed tool with no ToolSection markers, so the
``[x for x in result if x['model_class'] == 'ToolSection']`` filter
in the test came back empty.

Fix: when ``in_panel=True``, defer to the parent's to_dict (which
already does the right thing — and ``ToolBoxRegistry.get_tool``
inside ``apply_view`` lazy-loads only the tools the view actually
references). Keep the cheap flat path for ``in_panel=False`` where
no tool loading is needed.

Author: mvdbeek

lib/galaxy/tools/lazy_toolbox.py

@@ -1917,16 +1917,24 @@ def to_dict(
         """
         Create a dictionary representation of the toolbox.
 
-        For LazyToolBox, this returns lightweight data directly from the index
-        without loading full Tool objects. This is much faster and uses less memory.
-
-        Note: tool_help is ignored since we don't load the full tool.
+        For the *flat* listing (``in_panel=False``) we serve straight from
+        the index — no Tool loading needed. For the panel listing
+        (``in_panel=True``, e.g. ``tools?in_panel=True&view=custom_13``)
+        we defer to the parent: it walks ``_tool_panel_view_rendered``
+        which is built by ``apply_view`` against
+        ``_integrated_tool_panel`` and produces the section-aware
+        response shape (interleaved Tools and ToolSections) that the UI
+        and tests expect. ``ToolBoxRegistry.get_tool`` lazy-loads the
+        per-section tools as ``apply_view`` walks them, so this stays
+        cheap as long as the requested view scopes to a small section.
         """
         if self._tool_index is None:
             return []
 
-        rval = []
+        if in_panel:
+            return super().to_dict(trans, in_panel=True, tool_help=tool_help, view=view, **kwds)
 
+        rval = []
         # Return data directly from index - no tool loading needed!
         for _tool_id, entry in self._tool_index.entries.items():
             # Skip hidden tools unless requested