[Enhancement] Cannot identify the root cause of SdkExecutionError

[jnv]

When the request ends with timeout or network error, I get just a generic SdkExecutionError with the root cause buried in the message, for example: Request ended with network error: timeout.

This makes representing the error to the end user harder, for example in OneService we want to format the error into a GraphQL-compliant structure and expose the root cause to the client, so they can react accordingly.

I think what would help here is to either keep the original failure packed in the returned error, or at least pass its kind.

Relevant code:

one-sdk-js/src/core/events/failure/policy.ts

Lines 119 to 148 in fbf5e4c

	public toError(): Error {
	switch (this.data.kind) {
	case 'failure':
	return new SDKExecutionError(
	FailurePolicyReason.failureToString(this.data.failure),
	[
	`At ${new Date(this.data.failure.time).toISOString()}`,
	this.prefixMessages.join(': '),
	],
	[]
	);
	case 'policy':
	return new SDKExecutionError(
	`Failure policy aborted with reason:' ${this.data.reason}`,
	[this.prefixMessages.join(': ')],
	['Check that the failure policy is correctly configured']
	);
	}
	}
	private static failureToString(failure: ExecutionFailure): string {
	if (failure.kind === 'http') {
	return `Request ended with ${failure.kind} error, status code: ${failure.response.statusCode}`;
	} else if (failure.kind === 'request' || failure.kind === 'network') {
	return `Request ended with ${failure.kind} error: ${failure.issue}`;
	} else {
	return `Request ended with error: ${failure.originalError.toString()}`;
	}
	}