fix(core): ignore missing modules.yaml during postinstall

[meeroslav]

Pnpm lockfile parsing fails on postinstall since there is no .modules.yaml. The parsing should fail silently in such cases, since the first nx command run will recreate the graph anyway.

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #15642
Fixes #15656

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Name	Status	Preview	Comments	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Mar 14, 2023 at 0:34AM (UTC)

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✅ Successfully ran 8 targets

• nx run-many -t e2e-macos --parallel=1 --exclude=e2e-detox
• nx affected --target=e2e --base=e2a27039c0a9bd0854e18bdf399027648f6b80f0 --head=d05549eea50a798a0cc97015136364ddb7d02007 --exclude=e2e-storybook,e2e-storybook-angular --parallel=1
• nx affected --target=test --base=e2a27039c0a9bd0854e18bdf399027648f6b80f0 --head=d05549eea50a798a0cc97015136364ddb7d02007 --parallel=1
• nx affected --target=build --base=e2a27039c0a9bd0854e18bdf399027648f6b80f0 --head=d05549eea50a798a0cc97015136364ddb7d02007 --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=e2a27039c0a9bd0854e18bdf399027648f6b80f0 --head=d05549eea50a798a0cc97015136364ddb7d02007 --parallel=3
• nx-cloud record -- nx format:check --base=e2a27039c0a9bd0854e18bdf399027648f6b80f0 --head=d05549eea50a798a0cc97015136364ddb7d02007
• nx documentation --no-dte

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[github-actions]

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