[bsp_server] lower version flags to 17 in scip_const.py

[murray-stripe]

Description

A follow-up to #13. This PR changes the Java language level flags defined in scip_const.py (as part of the bsp_server) from 21 to 17, to remain consistent with the values defined in .bazelrc.

Type of Change

• Bug fix (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)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test improvement

Component(s) Affected

• Language Server (ULSP)
• SCIP Generation (Python utilities)
• VS Code/Cursor Extension
• Java Aggregator
• Build System (Bazel)
• Documentation
• Tests

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes (bazel test //...) (^**see comment)
• I have tested this manually with a real project

Manual Testing Details

Describe how you tested these changes:

• IDE used for testing: VS Code
• Project(s) tested against: Internal company project
• Specific features/scenarios verified: run scip_sync.py both for a "full" sync an an incremental sync.

Checklist

• My code follows the existing code style and conventions
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have updated BUILD.bazel files if I added new source files
• My changes generate no new warnings
• Any dependent changes have been merged and published

Screenshots/Logs (if applicable)

Include any relevant screenshots, logs, or output that demonstrates the changes.

Related Issues

Fixes #(issue number)
Closes #(issue number)
Related to #(issue number)

Additional Notes

Any additional information that reviewers should know about this PR.

[murray-stripe]

Noticed a couple of things here regarding the tests for bsp_server.

0. The tests do not run as part of the github CI workflow, we just run bazel test //src/...
1. The tests do not all pass (on main)
2. I made a change to get one of the tests to pass since it was sort-of related to my changes.
3. There remains one failing test that seems to be expecting a test repo? Maybe this was missed when pulling this into the open-source version and could be rectified.

[murray-stripe]

Just a little cleanup since the glob isn't really needed here.