fix(angular): should support filereplacements for apps that already have them

[Coly010]

Current Behavior

People may need to run setup-ssr on an app they have migrated along older versions of angular which still has fileReplacments

Expected Behavior

We should support this use case

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✅ Successfully ran 12 targets

• nx affected --target=e2e --base=b88dc35aa56376d6c0fa2a01a728ffddb95eec47 --head=07450a488b3b99f46fb26b23f36183a121343a01 --exclude=e2e-storybook,e2e-storybook-angular,e2e-react-native,e2e-detox --parallel=1
• nx affected --target=test --base=b88dc35aa56376d6c0fa2a01a728ffddb95eec47 --head=07450a488b3b99f46fb26b23f36183a121343a01 --parallel=1
• nx affected --target=build --base=b88dc35aa56376d6c0fa2a01a728ffddb95eec47 --head=07450a488b3b99f46fb26b23f36183a121343a01 --parallel=3
• nx-cloud record -- yarn depcheck
• nx affected --target=lint --base=b88dc35aa56376d6c0fa2a01a728ffddb95eec47 --head=07450a488b3b99f46fb26b23f36183a121343a01 --parallel=3
• nx-cloud record -- yarn nx workspace-lint
• nx-cloud record -- yarn check-lock-files
• nx-cloud record -- yarn check-commit
• nx-cloud record -- yarn nx format:check --base=b88dc35aa56376d6c0fa2a01a728ffddb95eec47 --head=07450a488b3b99f46fb26b23f36183a121343a01
• nx-cloud record -- yarn check-imports
• nx-cloud record -- yarn documentation
• nx build typedoc-theme

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Name	Status	Preview	Updated
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