test(apex-log): select default Apex class template by name - W-23711825

[mshanemc]

What does this PR do?

• Selects the DefaultApexClass QuickPick option by accessible name in the Apex class generation Playwright test instead of relying on option order and keyboard acceptance.
• Keeps class-name entry, output-directory selection, and generated-file assertions unchanged.
• Committed plan: .claude/plans/W-23711825.md
• Test evidence: focused Apex Log web and desktop Playwright coverage with retries disabled; duplicate detection and repository readiness checks covering compile, lint, Effect diagnostics, unit tests, VS Code bundle, and knip.

What issues does this PR fix or reference?

@W-23711825@

[mshanemc]

/ai-auto approve