fix(pds-ember): build production Ember assets for Storybook

[CITguy]

ember build generates development assets by default. Updating to use the build script which runs ember build in the production environment.

BEFORE (Netlify build log)

AFTER (Netlify build log)

Acceptance Criteria

• Navigate to this PR's deploy preview
• When inspecting PDS component markup, [data-test-*] attrs should not be present.

[CITguy]

Closing PR. Will investigate in the future, when I have extra bandwidth.

[CITguy]

Context:

No matter what I do with the scripts, nothing seems to remove the [data-test-*] attrs from the Ember component markup in Storybook.