Datatables do not respect the `flex` `column_arg`

[amks1]

As per the documentation here and here, the flex key should be able to resize the columns to fit the page width in proportion to the flex values given.

Here's my code:

def test_pywebio():
	row = {
		"Col1": "1",
		"Col2": "asddddddda",
		"Col3": "asdasd",
		"Col4": "asdasdasd",
		"Col5": "asd",
		"Col6": "asd",
		"Col7": "asd",
		"Col8": "asdasdasdas",
		"Col9": "asdasda",
	}
	col_args = {
		"Col1": {"flex": 1},
		"Col2": {"flex": 6},
		"Col3": {"flex": 2},
		"Col4": {"flex": 2},
		"Col5": {"flex": 2},
		"Col6": {"flex": 2},
		"Col7": {"flex": 2},
		"Col8": {"flex": 6},
		"Col9": {"flex": 2},
	}

	pywebio.output.put_datatable([row], column_args=col_args, height='auto')

Here's the output:

As you can see, the flex values are not being considered.
I also tried using maxWidth, minWidth and width values, and although there are some changes to the table sizes, it does not work as documented.

Environment Information

• OS and Version: Win11
• Browser and Version: Chrome Version 111.0.5563.147 (Official Build) (64-bit)
• Python Version: v3.11.2
• PyWebIO Version: 1.8.0

[wang0618]

pywebio will call gridOptions.columnApi.autoSizeAllColumns() when the grid is ready, which will make the grid ignore the flex setting on column.

I will consider to update code to disable auto size column when user provide column sizing settings.