fix(desktop): hide bun:sqlite import from Node.js/Electron ESM loader

Uses new Function() to prevent the static ESM loader from seeing
the bun: protocol import at parse time. In Electron/Node.js, the
import() call is evaluated at runtime and gracefully returns null
when bun:sqlite is unavailable.

Fixes #3829, likely fixes #3762

src/plugin/ultrawork-db-model-override.bun-sqlite-unavailable.test.ts

@@ -13,7 +13,9 @@ describe("scheduleDeferredModelOverride bun:sqlite unavailable", () => {
 
     //#then
     expect(hasStaticBunSqliteImport).toBe(false)
-    expect(source).toContain('await import("bun:sqlite").catch(() => null)')
+    // new Function() hides the bun: import from Node.js/Electron static ESM loader
+    expect(source).toContain("new Function(\"return import('bun:sqlite')\")")
+    expect(source).toContain("typeof globalThis.Bun === \"undefined\"")
     expect(source).toContain("bun:sqlite unavailable")
     expect(source).toContain("return")
   })