fix(core): nx migrate should not prompt if on CI server

[AgentEnder]

Current Behavior

nx migrate always prompts to enable cloud, but on CI servers this causes a failed migration

Expected Behavior

nx migrate skips any prompts on CI servers

Related Issue(s)

Fixes #12397

[vercel]

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Name	Status	Preview	Comments	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 27, 2023 at 5:54PM (UTC)

[nx-cloud]

☁️ Nx Cloud Report

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✅ Successfully ran 8 targets

• nx run-many -t e2e-macos --parallel=1 --exclude=e2e-detox
• nx affected --target=e2e --base=ade20265701d4fa12c68bb94fce9ba02841ca222 --head=11b84a1d33929e4b1bfdd5507bab50cd4245c019 --exclude=e2e-storybook,e2e-storybook-angular --parallel=1
• nx affected --target=test --base=ade20265701d4fa12c68bb94fce9ba02841ca222 --head=11b84a1d33929e4b1bfdd5507bab50cd4245c019 --parallel=1
• nx affected --target=build --base=ade20265701d4fa12c68bb94fce9ba02841ca222 --head=11b84a1d33929e4b1bfdd5507bab50cd4245c019 --parallel=3
• nx run-many -t root-lint check-imports check-commit check-lock-files depcheck --parallel=1 --no-dte
• nx affected --target=lint --base=ade20265701d4fa12c68bb94fce9ba02841ca222 --head=11b84a1d33929e4b1bfdd5507bab50cd4245c019 --parallel=3
• nx-cloud record -- nx format:check --base=ade20265701d4fa12c68bb94fce9ba02841ca222 --head=11b84a1d33929e4b1bfdd5507bab50cd4245c019
• nx documentation --no-dte

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[github-actions]

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