fix: allow captions in devices that use old chrome to be shown (#8826)

## Description
In the specific case of using an old chrome version this minor changes
will allow the captions to be shown.

## Specific Changes proposed
Small fix when using videojs in an old browser that does not support the
css 'inset' property.

## Requirements Checklist
- [x] Feature implemented / Bug fixed
- [ ] If necessary, more likely in a feature request than a bug fix
- [ ] Change has been verified in an actual browser (Chrome, Firefox,
IE)
  - [ ] Unit Tests updated or fixed
  - [ ] Docs/guides updated
- [ ] Example created ([starter template on
JSBin](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0))
- [ ] Has no DOM changes which impact accessiblilty or trigger warnings
(e.g. Chrome issues tab)
  - [ ] Has no changes to JSDoc which cause `npm run docs:api` to error
- [ ] Reviewed by Two Core Contributors

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Co-authored-by: Walter Seymour <walterseymour15@gmail.com>
Co-authored-by: Gary Katsevman <git@gkatsev.com>