feat: Image annotation shapes improvements #1860

[marek-mihok]

The PR fulfills these requirements: (check all the apply)

• [x] It's submitted to the main branch.
• [x] When resolving a specific issue, it's referenced in the PR's title (e.g. feat: Add a button #xxx, where "xxx" is the issue number).
• [x] When resolving a specific issue, the PR description includes Closes #xxx, where "xxx" is the issue number.
• [x] If changes were made to ui folder, unit tests (make test) still pass.
• [x] New/updated tests are included

---

This PR brings the following enhancements:

• Both points and aux points match the tag colors.
• Line thickness and point size does not change when zooming.

https://github.com/h2oai/wave/assets/23740173/096ac635-955d-4b00-bec0-b029b5d6f077

Closes #1860 Closes #1862