Fix ace import in cell-based markdown editor

[guerler]

Switch to static imports to allow Vite to resolve them.

How to test the changes?

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• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[jmchilton]

Client lint errors look relevant:

/home/runner/work/galaxy/galaxy/client/src/components/Markdown/Editor/CellCode.vue
Error: 6:1 error Run autofix to sort these imports! simple-import-sort/imports