Fixed the highlight line (dividing line) of code cell in python file

[idlesilver]

The problem has be mentioned in #173 (comment) and microsoft/vscode#99425 (comment). The reason is missing two color configuration: interactive.activeCodeBorder and interactive.inactiveCodeBorder. You can fix it by adding the following configuration in the setting file. The selected line highlight can be handled with editor.lineHighlightBorder

    "workbench.colorCustomizations": {
        "[Monokai*]": {
            "editor.lineHighlightBorder": "#c1c0c070",
            "interactive.activeCodeBorder": "#fcfcfad0",
            "interactive.inactiveCodeBorder": "#c1c0c0",
        }
    },

Here is how it looks

[Monokai]

fixed in 1.3.0