fix(windows): invariant violation when web debugging is enabled

[tido64]

Description

When web debugging is enabled, nothing works due to an invariant violation:

Invariant Violation: TurboModuleRegistry.getEnforcing(...): 'DevSettings' could not be found. Verify that a module by this name is registered in the native binary. index.bundle:24051:28
    reactConsoleErrorHandler http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:24051
    reportException http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:23996
    handleException http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:24044
    handleError http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:23869
    reportFatalError http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:1238
    guardedLoadModule http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:165
    metroRequire http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:98
    <anonymous> http://localhost:8081/index.bundle?platform=windows&dev=true&hot=false&inlineSourceMap=true:106386
    executeApplicationScript http://localhost:8081/debugger-ui/debuggerWorker.aca173c4.js:4
    onmessage http://localhost:8081/debugger-ui/debuggerWorker.aca173c4.js:4

The cause of this is the DevSettings override that we use to fetch the ReactContext instance. By implementing ReactInstanceSettings::InstanceLoaded instead, we no longer need it, but it's not available till 0.64.

Platforms affected

• Android
• iOS
• macOS
• Windows

Test plan

cd example
yarn
yarn install-windows-test-app --use-nuget
yarn windows

0.63	0.64

[github-actions]

🎉 This PR is included in version 0.7.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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