Fix for issue with overrides file not writing correctly

[rudyflores]

Proposed changes

Turns out our issue with the breaking Theia test wasn't due to multiple calls to ProfilesInfo occuring on credential management load, the issue was a missing error handling for when reading the imperative.json file, since in Theia the file doesn't exist initially in our tests.

Release Notes

Milestone: v2.12.0

Changelog: Fixed issue with writeOverridesFile function not writing properly

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Updates to Documentation or Tests (if none of the other choices apply)

Checklist

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• I have read the CONTRIBUTOR GUIDANCE wiki
• PR title follows Conventional Commits Guidelines
• PR Description is included
• gif or screenshot is included if visual changes are made
• yarn workspace vscode-extension-for-zowe vscode:prepublish has been executed
• All checks have passed (DCO, Jenkins and Code Coverage)
• I have added unit test and it is passing
• I have added integration test and it is passing
• There is coverage for the code that I have added
• I have tested it manually and there are no regressions found
• I have added necessary documentation (if appropriate)
• Any PR dependencies have been merged and published (if appropriate)

Further comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files	Coverage Δ
packages/zowe-explorer/src/utils/ProfilesUtils.ts	92.10% <100.00%> (+0.14%)	⬆️

... and 1 file with indirect coverage changes

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[rudyflores]

closing in favor of #2537