Delete password when private key is used

[worksofliam]

Changes

There is a bug with starting the debugger if the user once used a password, but is now using a private key, as the user would never be prompted for the correct password when debugging.

Checklist

• have tested my change
• updated relevant documentation
• Remove any/all console.logs I added
• eslint is not complaining
• have added myself to the contributors' list in CONTRIBUTING.md
• for feature PRs: PR only includes one feature enhancement.

[sebjulliand]

It works as expected! Good job!
But context.secrets function are asynchronous, I'd suggest we await on them everywhere in the extension (here, but there are other places in the extension where await is missing too).

[worksofliam]

@sebjulliand Ready for another review - thanks!

[sebjulliand]

Looking good now!
I added a commit to add await in some other places where the secret store is used, I hope you won't mind 😁
Feel free to merge whenever you want.