Upgrade bramble to 0.1.29

[maddiedierker]

What's in this PR

As of writing this, the changes in this PR are available on this adhoc.

• commit - Removes the @code-dot-org/bramble NPM package as a dependency. Now, we will only publish bramble to S3.
• commit - Implements the new fileRefresh method from bramble (added in this commit). This is necessary when uploading a new image because images are managed outside of bramble, so we need to tell bramble to refresh the file tree UI after an image file is added to the tree.
• commit - Define the bramble URL on the server and pass it to the client, so we only need to change the URL in one place (either when updating the version, or using "devmode" to connect to your local bramble server).

Follow-up Work

• Revoke versions after 0.1.26 from @code-dot-org/bramble in NPM. Before removing this dependency, I attempted to upgrade it and mistakes were made 😅 I still have to decide how we'll deprecate or remove it from NPM's registry.
• Write documentation for 1) publishing a new version of bramble, and 2) enabling/using "devmode" for bramble in code studio.

Links

• STAR-989

Testing story

There are existing UI/eyes tests to make sure bramble loads when a user visits weblab. UI tests are still working as expected, and eyes tests will definitely need to be resolved.

Reviewer Checklist:

• Tests provide adequate coverage
• Code is well-commented
• New features are translatable or updates will not break translations
• Relevant documentation has been added or updated
• User impact is well-understood and desirable
• Pull Request is labeled appropriately
• Follow-up work items (including potential tech debt) are tracked and linked

[maddiedierker]

added fileRefresh to the bramble API in this commit

[maddiedierker]

closing this as i've broken this same work into two PRs -- #38374 and #38384