deploy manifest errs when give a directory containing a manifest

The help for deploy manifest reads:

Usage: rsconnect deploy manifest [OPTIONS] FILE

  Deploy content to Posit Connect, Posit Cloud, or shinyapps.io using an
  existing manifest.json file.  The specified file must either be named
  "manifest.json" or refer to a directory that contains a file named
  "manifest.json".

However, when providing a directory that contains a manifest.json, an error results.

Traceback (most recent call last):
  File "BASE_DIR/env/lib/python3.11/site-packages/rsconnect/main.py", line 108, in wrapper
    result = func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^
  File "BASE_DIR/env/lib/python3.11/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context(), *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "BASE_DIR/env/lib/python3.11/site-packages/rsconnect/main.py", line 1119, in deploy_manifest
    kwargs["title"] = title or default_title_from_manifest(file)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "BASE_DIR/env/lib/python3.11/site-packages/rsconnect/bundle.py", line 744, in default_title_from_manifest
    source_manifest, _ = read_manifest_file(file)
                         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "BASE_DIR/env/lib/python3.11/site-packages/rsconnect/bundle.py", line 757, in read_manifest_file
    with open(manifest_path, "rb") as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^
IsADirectoryError: [Errno 21] Is a directory: 'model'
Internal error: [Errno 21] Is a directory: 'model'

Providing the path to the manifest.json works.

# error
rsconnect deploy manifest model
# no error
rsconnect deploy manifest model/manifest.json

Using rsconnect-python 1.23.0.

The manifest is correctly identified:

rsconnect.bundle.validate_manifest_file("model")
#> 'model/manifest.json'

However, in deploy_manifest(), we rewrite the incoming file to file_name but do not consistently use that variable.

https://github.com/rstudio/rsconnect-python/blob/74b7f6899206ff754e29ad282c3dc725ab4e186b/rsconnect/main.py#L1146-L1179

Bắt đầu trong rsconnect/main.py tại deploy_manifest(), sau đó theo dõi default_title_from_manifest() và read_manifest_file() trong rsconnect/bundle.py. So sánh cách file và file_name được sử dụng sau khi xác thực manifest, đồng thời xác minh rằng cả rsconnect deploy manifest model và đường dẫn manifest trực tiếp đều hoàn tất mà không gặp lỗi thư mục.