Importing a workflow with embedded tools fails if the latest CWL version is a development one

[nsoranzo]

Describe the bug
When importing a workflow via API, the workflow is updated to the latest CWL version (currently "v1.3.0-dev1", a development version) in WorkflowContentsManager.normalize_workflow_format() when workflow_proxy(workflow_path) is called.
Then, in the same method, each embedded tool is first persisted (representation = tool_reference_proxy.to_persistent_representation()) and then reloaded from the persisted representation in DynamicToolManager.create_tool() by calling tool_proxy(). This will try to update the tool again, but this will fail because it's already at a development version.

To Reproduce
Steps to reproduce the behavior:

1. ./run_tests.sh -api lib/galaxy_test/api/test_workflows_cwl.py::TestCwlWorkflows::test_simplest_wf

Traceback:

  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/webapps/galaxy/api/workflows.py", line 310, in create
    return self.__api_import_new_workflow(trans, payload, **kwd)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/webapps/galaxy/api/workflows.py", line 622, in __api_import_new_workflow
    raw_workflow_description = self.__normalize_workflow(trans, data)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/webapps/galaxy/api/workflows.py", line 641, in __normalize_workflow
    return self.workflow_contents_manager.normalize_workflow_format(trans, as_dict)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/managers/workflows.py", line 682, in normalize_workflow_format
    self.app.dynamic_tool_manager.create_tool(
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/managers/tools.py", line 105, in create_tool
    proxy = tool_proxy(
            ^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/tool_util/cwl/parser.py", line 741, in tool_proxy
    return _to_cwl_tool_object(
           ^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/tool_util/cwl/parser.py", line 811, in _to_cwl_tool_object
    cwl_tool = schema_loader.tool(
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/tool_util/cwl/schema.py", line 99, in tool
    process_definition = self.process_definition(raw_process_reference)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/lib/galaxy/tool_util/cwl/schema.py", line 82, in process_definition
    loading_context, uri = resolve_and_validate_document(
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/.venv/lib/python3.12/site-packages/cwltool/load_tool.py", line 540, in resolve_and_validate_document
    processobj = update.update(
                 ^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/.venv/lib/python3.12/site-packages/cwltool/update.py", line 357, in update
    (cdoc, version) = checkversion(doc, metadata, enable_dev)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/users/ga002/soranzon/software/nsoranzo_galaxy/.venv/lib/python3.12/site-packages/cwltool/update.py", line 333, in checkversion
    raise ValidationException(
schema_salad.exceptions.ValidationException: Version 'v1.3.0-dev1' is a development or deprecated version.
 Update your document to a stable version (v1.0, v1.1, v1.2) or use --enable-dev to enable support for development and deprecated versions.

Potential solution
Instead of persisting and then reloading each embedded tool, create the dynamic tool from the existing tool_proxies available in the workflow proxy.