2797 : Improve untracked files message during eject

[Dubes]

This attempts to improve the message shown to user when ejecting on a git repo having untracked changes ( Issue: #2797 )

Proposed message

Your git working tree is dirty. This will make it hard for you to resolve any unintended consequences eject may have on your changes.
Please use git status to verify the changed files, then either remove , stash or commit them before trying again.

Message break down:

• state the root cause
• state why this is not allowed
• hint for the user to identify files causing problems
• hint for the user towards action they can commit

I did not list the files (as was done previously) as that may lead users to more confusion (why is CRA having problem with this file etc.), instead tell the users how they can find it.

Testing:
Screenshot attached:

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[Dubes]

doesn't look like my changes broke the builds, but I cannot rerun them to verify.

[Timer]

Hi! We just merged #3416 to improve how files are displayed, but would still appreciate your adjusted wording.

If possible, I'd like it to be a bit more terse and leave current wording. How about we just add another line after the instructions at the end?

Modify "This will make it hard for you to resolve any unintended consequences eject may have on your changes" to be-post instruction, like "Doing this will make it easy" etc.

[Dubes]

Sure, will update it...

[Timer]

Thanks! Sorry for letting this slip through the cracks.

[Dubes]

No Problem! it happens :-)
I adapted the message and resolved the conflict via browser, but I am new to Github and not sure if I messed something up (I still see the conflict message). Do let me know if there is something I need to do.

[Timer]

Hmm, I'm not super fond of any of this wording. Let's revisit it sometime in the future.

Thanks for the time you put into this!