[BUG] If an exception occurs while sending an Azure storage request and it doesn't have a cause then the information in the exception gets dropped

[charlesjmorgan]

Describe the bug
The error handling for the sendRequest method in the StorageImplUtils assumes that the exception has a cause:

azure-sdk-for-java/sdk/storage/azure-storage-common/src/main/java/com/azure/storage/common/implementation/StorageImplUtils.java

Lines 499 to 512 in f36f0f5

	Throwable cause = e.getCause();
	if (exceptionType.isInstance(e)) {
	// Safe to cast since we checked with isInstance
	throw exceptionType.cast(e);
	} else if (cause instanceof RuntimeException) {
	// Throw as is if it's already a RuntimeException
	throw (RuntimeException) cause;
	} else if (cause instanceof Error) {
	// Propagate if it's an Error
	throw (Error) cause;
	} else {
	// Wrap in RuntimeException if it's neither Error nor RuntimeException
	throw LOGGER.logExceptionAsError(new RuntimeException(cause));
	}

If the exception doesn't have a cause and it is the root cause itself then any information contained in the caught exception is dropped and a generic RuntimeException is thrown with a null cause

Exception or Stack Trace
Just an empty RuntimeException that gets thrown without a cause from StorageImplUtils#sendRequest

To Reproduce
Steps to reproduce the behavior: I don't believe these are needed

Code Snippet

    public static <T> T sendRequest(Callable<T> operation, Duration timeout,
        Class<? extends RuntimeException> exceptionType) {
        try {
            if (timeout == null) {
                return operation.call();
            }
            Future<T> future = SharedExecutorService.getInstance().submit(operation);
            return getResultWithTimeout(future, timeout.toMillis(), exceptionType);
        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (exceptionType.isInstance(e)) {
                // Safe to cast since we checked with isInstance
                throw exceptionType.cast(e);
            } else if (cause instanceof RuntimeException) {
                // Throw as is if it's already a RuntimeException
                throw (RuntimeException) cause;
            } else if (cause instanceof Error) {
                // Propagate if it's an Error
                throw (Error) cause;
            } else {
                // Wrap in RuntimeException if it's neither Error nor RuntimeException
                throw LOGGER.logExceptionAsError(new RuntimeException(cause));
            }
        }
    }

Expected behavior
I expect that if an exception is caught in the sendRequest method and it doesn't have a cause that the same exception should be rethrown if it is either a runtime exception or an error.

Information Checklist
Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report

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