chore(react): pnpm developer workflow for live reload

[sean-perkins]

Issue number: N/A

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What is the current behavior?

N/A

What is the new behavior?

• The Stencil dev-server will write the dist/ directory and run the output targets when the dev-server compiles.
• Package resolution of the @ionic/core package is corrected for the react test apps (uses local core/ folder instead of npm registry)

Does this introduce a breaking change?

• [ ] Yes
• [x] No

Other information