Dynamic loader, Dexie ESM fix

[jbukl]

encountered errors with the dynamic loader (when opening search.html) and dexie (import dictionary collection). the former I didn't actually see any visual errors other than the popup on search.html being broken, but errors showed up in console.

• dynamic loader loads in scripts as modules - don't know anything about how this loader works, but upon seeing the error, I assumed dynamic loading could have caused it, and this seemed to fix it
• dynamic loader checks sentinel script using import.meta instead of document.currentScript - latter does not exist in modules
• import both dexie and the dexie-export-import addon, then export the updated Dexie object
• prevent vscode organizeImports from inserting spaces at ends of braces

have not tested with firefox - I assume it should be compatible, but noting that in case.

[github-actions]

✔️ No visual differences introduced by this PR.

View Playwright Report (note: open the "playwright-report" artifact)