Remove npm install --legacy-peer-deps flag (Post Vue 3 Migration)

[fergmac]

Describe the task
During the migration from Vue 2 to Vue 3 we are using the --legacy-peer-deps flag when running npm install to ignore peer dependency conflicts. Once we have deployed Vue 3 to production we should resolve these conflicts and remove the flag

Purpose
This flag is a temporary fix and long term we should resolve the peer dependency conflicts

Acceptance Criteria

• The application builds and runs successfully.

Additional context

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