Bug in @sentry/react-native Module with Error Handling Using String Cause

[Kobby-Bawuah]

SDK version: (Assuming latest as not specified)

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I have the following issue:

With regard to the @sentry/react-native SDK, a user reported that particularly within js/integrations/nativelinkederrors.js, there's a bug related to handling errors with a string cause. When an error is thrown with a string cause like so throw new Error("Error with string cause", { cause: "string cause" }), the SDK fails with a runtime error "right operand of 'in' is not an object", which seems to occur because the linkedError (the cause) is a string and not an object.

Steps to reproduce:
Step 1: Implement @sentry/react-native in a React Native project.
Step 2: Throw an error using throw new Error("Error with string cause", { cause: "string cause" }).

Actual result:

The SDK generates a runtime error stating "right operand of 'in' is not an object", failing to handle the error as expected.

Expected result:

The SDK should gracefully handle errors thrown with a string cause, without generating runtime errors.