fix(shell): some components fail to install when wsl username differs from Windows username

[rymancl]

Commands to Reproduce

./install.sh

Expected Results

All components installed as expected

Actual Results

Fonts fail to install (maybe other components?)

Any additional logs that will help us?

For example, if my Windows username is 'john.smith' and my wsl username is 'john', certain components fail to install. This requires install to be ran with: 

> USER=john.smith ./install.sh

Operating System(s)

Windows (WSL)

Operating System (Other)

No response

Architecture

amd64 / x86_64

Shell

sh

Terminal Program(s)

other

Terminal Program(s) (Other)

Windows Terminal (wsl)

What is the output from uname -srv on the system(s) where the bug is occurring?

Linux 4.19.104-microsoft-standard #1 SMP Wed Feb 19 06:37:35 UTC 2020

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