fix(react): merge options.output.globals with extraGlobals

[wolfhoundjesse]

ISSUES CLOSED: #3789

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #

[nx-cloud]

Nx Cloud Report

CI ran the following commands for commit 1eebc78. Click to see the status, the terminal output, and the build insights.

Status	Command	Start Time
	nx build-base next	1/20/2021, 3:03:52 PM
	nx build-base react	1/20/2021, 3:03:45 PM
	nx run-many --target=build --all --parallel	1/20/2021, 3:03:42 PM
	nx run-many --target=e2e --projects=e2e-next	1/20/2021, 3:05:49 PM
	nx run-many --target=e2e --projects=e2e-react	1/20/2021, 3:06:00 PM
	nx run-many --target=lint --all --parallel	1/20/2021, 3:06:46 PM
	nx run-many --target=test --all --parallel	1/20/2021, 3:04:28 PM

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[github-actions]

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