Chore: Upgrade React Native to 0.68.2

[dnlsilva]

Proposed changes

Upgrades React Native to 0.68.2, which is a huge jump from 0.64.2.

Issue(s)

Depends on RocketChat/rn-root-view#3
Depends on https://github.com/RocketChat/react-native/tree/0.68.2

How to test or reproduce

• We need to test it deeper than a beta, because things might break
  • For example, attachment zoom was failing and I had to fix

Screenshots

This PR left side vs Production app right side

Running on Samsung S10e.
I didn't find a visible difference in performance on iOS.

RN68.mp4

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments

[diegolmello]

After a long time trying to figure out why it would compile perfectly from Xcode, but not from Terminal I found this https://gist.github.com/LeZuse/bf838718ff2689c5fc035c5a6825a11c

Apparently, we have to have everything running Rosetta, but Node 16 is going to use ARM no no matter what.

Following that gist to install Node 14.20 did the trick for me :)

[lgtm-com]

This pull request introduces 2 alerts when merging 082a63b into 5875454 - view on LGTM.com

new alerts:

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[lgtm-com]

This pull request introduces 2 alerts when merging b89380f into 5875454 - view on LGTM.com

new alerts:

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[lgtm-com]

This pull request introduces 2 alerts when merging 96a6794 into e38aedc - view on LGTM.com

new alerts:

• 2 for Unknown directive