Fix failure to activate in empty workspace

[t1m0thyj]

Proposed changes

Fixes #1994 which is related to microsoft/vscode#96111. When an empty workspace is open in VS Code, then vscode.workspace.workspaceFolders = [undefined] which we weren't handling correctly.

Release Notes

Milestone: 2.4.1

Changelog: Updated in the PR

Types of changes

• Bugfix (non-breaking change which fixes an issue)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This checklist will be used as reference for both the contributor and the reviewer

• 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

Here's how to create an empty workspace to test this PR. After saving the workspace, you can reopen the .workspace file to reproduce the issue.

[codecov]

Codecov Report

Base: 74.44% // Head: 74.46% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (b08de47) compared to base (720e8e0).
Patch coverage: 75.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2002      +/-   ##
==========================================
+ Coverage   74.44%   74.46%   +0.01%     
==========================================
  Files          63       63              
  Lines        7129     7130       +1     
  Branches     1543     1543              
==========================================
+ Hits         5307     5309       +2     
+ Misses       1815     1814       -1     
  Partials        7        7              

Impacted Files	Coverage Δ
packages/zowe-explorer/src/extension.ts	38.31% <0.00%> (-0.08%)	⬇️
packages/zowe-explorer/src/Profiles.ts	36.29% <80.00%> (+0.20%)	⬆️
packages/zowe-explorer/src/ZoweExplorerExtender.ts	63.15% <100.00%> (ø)
packages/zowe-explorer/src/utils/ProfilesUtils.ts	68.06% <100.00%> (ø)

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[zFernand0]

LGTM! 😋

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication

[JillieBeanSim]

Thanks for the fix @t1m0thyj