fix(core): handle empty scripts in nx init

[leosvelperez]

Current Behavior

Running nx init in a repo where there are no scripts in the package.json throws. It also throws in an Angular CLI workspace with no targets (more of an edge case).

Expected Behavior

Running nx init in a repo where there are no scripts in the package.json should not throw.
Running nx init in an Angular CLI workspace with no targets should not throw.

Related Issue(s)

Fixes #17234

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 26, 2023 8:09am

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✅ Successfully ran 7 targets

• nx affected -t e2e-macos --parallel=1 --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36
• nx affected --target=e2e --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36 --parallel=1
• nx affected --target=test --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36 --parallel=1
• nx affected --target=build --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36 --parallel=3
• nx run-many -t check-imports check-commit check-lock-files depcheck check-codeowners --parallel=1 --no-dte
• nx affected --target=lint --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36 --parallel=3
• nx-cloud record -- nx format:check --base=1efde20650a645d27b576e88c0dab24e8cc8e488 --head=bf19f67500615f5b825adca6d651047ccf3fbf36

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[github-actions]

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