using wsl feature not work

[LNKLEO]

🐛 Bug Report

using wsl feature active failed
after fixe this above, it can't fetch problem list
file path conversion between windows and wsl failed during open new problem

To Reproduce

simply active use wsl setting and reopen the extension

Expected behavior

should work as normal

Extension Output

some import error and "wsl node" exit code 1
then output has show the problem list while sidebar shows none of them, also a error pops up

Your Environment

• os: Windows 10 Insider Build 19559
• extension settings: using wsl (not remote wsl, but build-in feature from extension)
• nodejs version: 13.8 from wsl
• vscode version: 1.43 insider
• extension version: 0.16.0

i have pointed out the bug, and fixed locally.
you converted the path to wsl path too early since the binary path is illegal

[LNKLEO]

a pr [#510] is already created
some reduntant variable and function related removed