Update react-native.md

[jimchou-dev]

Update instruction to create metro.config.js as it does not comes automatically with Expo

[prmerger-automator]

@jimchou-dev : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 3441a68:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/communication-services/quickstarts/chat/react-native.md	✅Succeeded

For more details, please refer to the build report.

[Court72]

@ashwinder

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[learn-build-service-prod]

Learn Build status updates of commit 1363de4:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/communication-services/quickstarts/chat/react-native.md	✅Succeeded

For more details, please refer to the build report.

[prmerger-automator]

PRMerger Results

Issue	Description
File Change Percent	This PR contains file(s) with more than 30% file change.

[jimchou-dev]

Updated author to awang119

[jimchou-dev]

#sign-off

[prmerger-automator]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @awang119

[awang119]

#sign-off

[Court72]

Hi @jimchou-dev and @awang119 - In the public repo, the original article author must sign off to approve metadata updates. Did you mean to open this PR in the private repo instead?

#hold-off