fix(react): skip exports field in generated package.json when using rollup to bundle library

[jaysoo]

This PR reverts generated package.json to not include exports, module, and main fields since these are generated dynamically by @nrwl/rollup:rollup executor.

Also adds @nrwl/rollup install to @nrwl/rollup:init generator which was missing previously.

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #14063

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1 Ignored Deployment

Name	Status	Preview	Updated
nx-dev	⬜️ Ignored (Inspect)		Jan 3, 2023 at 2:24PM (UTC)

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✅ Successfully ran 11 targets

• nx affected --target=e2e --base=53cffacf6bc70a83f0d7d3a22fc22a264302cf87 --head=85c49124675f4a3cab1599991800183d4cf3fb79 --exclude=e2e-storybook,e2e-storybook-angular,e2e-react-native,e2e-detox --parallel=1
• nx depcheck --no-dte
• nx affected --target=test --base=53cffacf6bc70a83f0d7d3a22fc22a264302cf87 --head=85c49124675f4a3cab1599991800183d4cf3fb79 --parallel=1
• nx lint --no-dte
• nx check-lock-files --no-dte
• nx affected --target=lint --base=53cffacf6bc70a83f0d7d3a22fc22a264302cf87 --head=85c49124675f4a3cab1599991800183d4cf3fb79 --parallel=3
• nx check-commit --no-dte
• nx affected --target=build --base=53cffacf6bc70a83f0d7d3a22fc22a264302cf87 --head=85c49124675f4a3cab1599991800183d4cf3fb79 --parallel=3
• nx-cloud record -- nx format:check --base=53cffacf6bc70a83f0d7d3a22fc22a264302cf87 --head=85c49124675f4a3cab1599991800183d4cf3fb79
• nx check-imports --no-dte
• nx documentation --no-dte

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