Bug: cannot tell cli2gui to select a new output file

[mokurin000]

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Issue Details

Before 9398671, Cli2Gui cannot detect Path type; after that, similar to case for argparse.FileType('w'), cli2gui will open an read mode file for Path

Description

the actual impact is, users must create the output file before they select.

Expected Behavior

users could set path to a new filename

Actual Behavior

users must select an existing file for output

System Information

Please provide the following additional information about your system or
environment:

• Operating System (OS): Windows
• OS Version: 11
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[FredHappyface]

Thanks for the bug report, and good spot! I've added file write on my local branch and I'll hopefully get this tested and pushed this week all being well