fix(core): nx affected should not differ if in child directory

[AgentEnder]

Current Behavior

cd packages/nx
nx affected:libs // Always empty

Expected Behavior

cd packages/nx
nx affected:libs 

is equivalent to

nx affected:libs

Related Issue(s)

Fixes #11695

[vercel]

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Name	Status	Preview	Comments	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 27, 2023 at 9:02PM (UTC)

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit 5dd189f. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this branch

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✅ Successfully ran 8 targets

• nx run-many -t e2e-macos --parallel=1 --exclude=e2e-detox
• nx affected --target=e2e --base=729ff7eac2521b5bc08b8e631992b984ec133c86 --head=5dd189f3d574258e102b5d34e98d2b2984143450 --exclude=e2e-storybook,e2e-storybook-angular --parallel=1
• nx affected --target=lint --base=729ff7eac2521b5bc08b8e631992b984ec133c86 --head=5dd189f3d574258e102b5d34e98d2b2984143450 --parallel=3
• nx run-many -t root-lint check-imports check-commit check-lock-files depcheck --parallel=1 --no-dte
• nx affected --target=build --base=729ff7eac2521b5bc08b8e631992b984ec133c86 --head=5dd189f3d574258e102b5d34e98d2b2984143450 --parallel=3
• nx affected --target=test --base=729ff7eac2521b5bc08b8e631992b984ec133c86 --head=5dd189f3d574258e102b5d34e98d2b2984143450 --parallel=1
• nx-cloud record -- nx format:check --base=729ff7eac2521b5bc08b8e631992b984ec133c86 --head=5dd189f3d574258e102b5d34e98d2b2984143450
• nx documentation --no-dte

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[github-actions]

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