Remove direct access to import.meta

[fredj]

I use webpack-dev-server with my application and after upgrading from version 1.108 to version 1.109 I have the following error:

WARNING in ./node_modules/@cesium/engine/Source/Core/buildModuleUrl.js 44:21-32
Critical dependency: Accessing import.meta directly is unsupported (only property access or destructuring is supported)"

The webpack documentation says that:

webpack does not support direct access to import.meta. Instead, you should access its properties or use destructuring assignment.

This PR changes the defined parameter and webpack is happy with that

[cesium-concierge]

Thanks for the pull request @fredj!

• ✔️ Signed CLA found.
• ❔ CHANGES.md was not updated.
  • If this change updates the public API in any way, please add a bullet point to CHANGES.md.
• ❔ Unit tests were not updated.
  • Make sure you've updated tests to reflect your changes, added tests for any new code, and ran the code coverage tool.

Reviewers, don't forget to make sure that:

• Cesium Viewer works.
• Works in 2D/CV.

[ggetz]

Thanks @fredj! Would you mind updating CHANGES.md with a summary of the fix?

[fredj]

Thanks @fredj! Would you mind updating CHANGES.md with a summary of the fix?

done

[ggetz]

Thanks again!