[0.79] Update Metro to ^0.82.0

[robhogan]

Summary:

Effectively picks:

1. Update Metro dependencies to 0.82.0 #49885
2. metro-config: Don't always assert import/require with unstable_enablePackageExports #49780

(1) Updates all metro* dependencies to the latest ^0.82.0.

The breaking changes in this release apply only to frameworks and integrators.

This update brings package.json#exports resolution enabled by default, and lazy hashing for much faster Metro startup.

Release notes:
https://github.com/facebook/metro/releases/tag/v0.82.0

(2) Is the new recommended config for unstable_conditionNames for Metro >=0.81.3 - we don't always assert require and import in every resolution, Metro now implicitly asserts import OR require depending on the the way the dependency is declared in the source file.

Changelog:
[General][Changed] Update Metro to ^0.82.0

Test plan

As in main