Fix LSP issues post core-std merger

[SwayStar123]

The core and std library merger (#6729) has introduced a few failing tests that seem to be bugs within the lsp itself.

Failing tests:
sway-lsp::lib completion
sway-lsp::lib publish_diagnostics_dead_code_warning
sway-lsp lsp_syncs_with_workspace_edits

Failed projects:
- Project: match_expressions_or
  Path:    /home/runner/actions-runner/_work/sway/sway/test/src/e2e_vm_tests/test_programs/should_pass/language/match_expressions_or/src/main.sw
  Error:   Exit code: exit status: 1
- Project: match_expressions_unreachable_or
  Path:    /home/runner/actions-runner/_work/sway/sway/test/src/e2e_vm_tests/test_programs/should_pass/language/match_expressions_unreachable_or/src/main.sw
  Error:   Exit code: exit status: 1
- Project: fix_opcode_bug
  Path:    /home/runner/actions-runner/_work/sway/sway/test/src/e2e_vm_tests/test_programs/should_pass/language/fix_opcode_bug/src/main.sw
  Error:   Exit code: signal: 9 (SIGKILL)