Vue3: Remove `--legacy-peer-deps` install flag

[lreading]

Describe what problem your feature request solves:

For the vue3-compat layer to function properly, we needed to include the --legacy-peer-deps in all of the npm install commands. After removing compat, this should no longer be necessary.

Describe the solution you'd like:

• Remove td.vue/.npmrc.
• Remove --legacy-peer-deps from the Dockerfile and GitHub Actions workflows.

Declaration:

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• read the contribution guide and agree to the Code of Conduct
• not used agentic or generative AI in creating this feature request

Additional context: