feat: upgrades to svg doctor

[fkakatie]

Description

• allow users to continue to drag-and-drop svgs after uploading the first (users can upload another svg without clicking the "reset" button)
• selected buttons (eg. dark vs. light mode, button vs. image display) are marked

How Has This Been Tested?

https://svg-doctor--helix-website--adobe.hlx.live/tools/svg-doctor/

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some test suites that validate the page speed.
In case there are problems, just click the checkbox below to rerun the respective action.

• Re-run PSI Checks

[aem-code-sync]

Page	Scores	Audits	Google
/tools/svg-doctor/

[fkakatie]