Update RCTLinking.m

[shrutic123]

Thanks for submitting a PR! Please read these instructions carefully:

• [X ] Explain the motivation for making this change.be app extension safe
• [X ] Provide a test plan demonstrating that the code is solid.
• [ X] Match the code formatting of the rest of the codebase.
• [X ] Target the master branch, NOT a "stable" branch.

Motivation (required)

What existing problem does the pull request solve?

React-navigation requires LinkingIOS to be referenced. When I include the RCTLinkingIOS subspec, it exposes more app extension unsafe code. This fix updates the RCTLinkingIOS code to

Test Plan (required)

A good test plan has the exact commands you ran and their output, provides screenshots or videos if the pull request changes UI or updates the website. See What is a Test Plan? to learn more.

Made changes locally and tested on my local device that the react-native code compiles with RCTLinkingIOS subspec specified

If you have added code that should be tested, add tests.

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[shrutic123]

Seems like the PR failed at a file that is unrelated to my code changes. Appreciate thoughts on how to resolve it

[shrutic]

Would appreciate if someone could review and check this code in. This PR blocks us from using react-navigation in our iMessage app extension.

And given that Navigator is removed in the latest react-native release, the priority of this fix going in is much higher for us

[shrutic]

@javache .. Appreciate if you could take a look at this PR and import. Including you as you have imported my other similar PRs here #13328 and #13227

[javache]

Could you merge this again? It seems you've picked up a bunch of unrelated changes.

[shrutic123]

@javache I have since created a new PR to address this issue. #14263. I thought I closed this one. Let me try and close it