Preserve Create Clips workflow when opening media

[FernandoAbishai]

Summary

• preserve the current Create Clips vs Edit a Video intent when using toolbar Open
• label the global short-mode export action as Export Full Video so it is distinct from the Create Clips Export stage
• update focused lifecycle/state smokes

Validation

• npm --prefix frontend run test:clips-first-lifecycle
• npm --prefix frontend run test:editor-state
• npm --prefix frontend run test:editor-frame
• npm run smoke:golden-creator-path
• npm --prefix frontend run lint
• npm run build:frontend
• git diff --check

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