fix(examples): rename DisabledAutoFocus fixture to use focusOnHover={false}

[dukunline-cyber]

/claim #163

Closes #163.

Summary

The DisabledAutoFocus fixture in src/examples/2025/board.fixture.tsx is the only remaining reference in the repo to the legacy disableAutoFocus API.

Changes

• Renames the fixture export DisabledAutoFocus → FocusOnHoverDisabled to match the current focusOnHover API surface (consistent with sibling fixtures in hover-behavior.fixture.tsx).
• Adds focusOnHover={false} prop to <PCBViewer /> so the fixture actually exercises the disabled-focus behavior its name implies (previously the prop was missing entirely, which meant it relied on default behavior).

Verification

$ grep -rn "DisabledAutoFocus\|disableAutoFocus" --include="*.tsx" --include="*.ts" .
# (no matches after this PR)

Diff is 2 lines.

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Project	Deployment	Actions	Updated (UTC)
pcb-viewer	Ready	Preview, Comment	May 16, 2026 7:57pm

[dukunline-cyber]

Quick status update for maintainers:

• ✅ Both CI checks green
• ✅ Mergeable, no conflicts
• ✅ Diff is 2 lines (the rename + the prop addition)
• ✅ Verified zero remaining disableAutoFocus / DisabledAutoFocus references in the repo via grep -rn

Ready when you have a moment. Happy to rebase if anything lands first.

[dukunline-cyber]

/claim #163

[dukunline-cyber]

Hi, just following up — any review comments or changes needed? Happy to iterate.