join_lines_based_on_source=true vs 1-argument trailing comma

[mortenpi]

There is the 1-argument edge case trailing commas, where JuliaFormatter removes the trailing comma, but in my opinion it should stay (the standard diffing argument). I.e.

xs = [
    1,
]

vs

xs = [
    1
]

and

foo(
    1,
)

vs

foo(
    1
)

JuliaFormatter will format to the latter, but I think it should keep the comma.

julia> format_text("""
       [
         x,
       ]
       """, style=BlueStyle(), trailing_comma=true, join_lines_based_on_source=true) |> println
[
    x
]

There is the similar discussion in #455, but I feel that it might be a separate issue, since without join_lines_based_on_source=true, JuliaFormatter collapses everything into a single line, so you don't see the issue.