fix(react): add deprecated messages to react and next generators

[jaysoo]

The previous boolean value is incorrect, this fixes that.

[vercel]

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Name	Status	Preview	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	Jan 12, 2023 at 3:51PM (UTC)

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✅ Successfully ran 5 targets

• nx affected --target=e2e --base=b1976796f111f477b26ed9a2d2125fd5fb528ddf --head=1c9a6dc5840205f776128cf1240af792d43bff72 --exclude=e2e-storybook,e2e-storybook-angular,e2e-react-native,e2e-detox --parallel=1
• nx affected -t test lint --base=b1976796f111f477b26ed9a2d2125fd5fb528ddf --head=1c9a6dc5840205f776128cf1240af792d43bff72 --parallel=1
• nx run-many -t check-imports check-commit check-lock-files root-lint depcheck documentation --parallel=3 --no-dte
• nx affected --target=build --base=b1976796f111f477b26ed9a2d2125fd5fb528ddf --head=1c9a6dc5840205f776128cf1240af792d43bff72 --parallel=3
• nx-cloud record -- nx format:check --base=b1976796f111f477b26ed9a2d2125fd5fb528ddf --head=1c9a6dc5840205f776128cf1240af792d43bff72

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