#2329: workspace main should be auto selected when selecting a project in the gui

[samuelkos17]

This PR fixes #2329

Implemented changes:

• Added auto-selection logic of the workspace "main" to setWorkspaceComboBox in MainController.java
• Changed tests to fit the auto-selection logic

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Testing instructions

Please add conscise, understandable instructions on how a reviewer can test/verify the functionality of your contribution here:

1. Run ./build-local-dev.sh (when #2351: Fixed GUI not launching with local dev build #2352 is merged)
2. Open a shell and run ide gui
3. Select a project in the gui and observe the workspace combobox, it should contain "main" and the IDE-buttons should be clickable.

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Checklist for this PR

Make sure everything is checked before merging this PR. For further info please also see
our DoD.

• When running mvn clean test locally all tests pass and build is successful
• PR title is of the form #«issue-id»: «brief summary» (e.g. #921: fixed setup.bat and not feature/921 fixed setup.bat). If no issue ID exists, title only.
• PR top-level comment summaries what has been done and contains link to addressed issue(s)
• PR and issue(s) have suitable labels
• Issue is set to In Progress and assigned to you or there is no issue (might happen for very small PRs)
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  with internal
• You have not changed any dependency in pom.xml files or otherwise if runtime dependencies changed, you have updated our LICENSE.asciidoc
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

[coveralls]

Coverage Report for CI Build 32262031421

Coverage decreased (-0.002%) to 72.934%

Details

• Coverage decreased (-0.002%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 25 coverage regressions across 2 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

25 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/ide/gui/MainController.java	24	67.88%
com/devonfw/tools/ide/version/VersionSegment.java	1	90.03%

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Coverage Stats

Relevant Lines:	17571
Covered Lines:	13367
Line Coverage:	76.07%
Relevant Branches:	7771
Covered Branches:	5116
Branch Coverage:	65.83%
Branches in Coverage %:	Yes
Coverage Strength:	3.23 hits per line

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💛 - Coveralls