Prepend the installed tool path in the env/sys path

[TinaMor]

PR description

Prepend the installed tool path in the env/sys path so that it is found first.
Minor bug fixes

Checklist

As part of our commitment to engineering excellence, before submitting this PR, please make sure:

• You've tested this code in both Desktop & Server environments and AMD & ARM64 enviroments (functional testing).
• You've added unit tests for new code.
• You've added/updated documentation in the cmdlet docs, command-reference.md and the modules help files.
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• If changes have been made to your PR in the process of addressing comments, please make sure to test again the final version in both AMD and ARM64 environments.
• Validate your changes have not introduced any regressions.

[iankingori]

LGTM

[CharityKathure]

LGTM