[SEDONA-362] Fix bandAsArray to preserve the decimal part of float/double pixel values

[Kontinuation]

Did you read the Contributor Guide?

• Yes, I have read Contributor Rules and Contributor Development Guide

Is this PR related to a JIRA ticket?

• Yes, the URL of the associated JIRA ticket is https://issues.apache.org/jira/browse/SEDONA-362 The PR name follows the format [SEDONA-XXX] my subject.

What changes were proposed in this PR?

Fixed RS_BandAsArray to not truncate the decimal part of float/double pixel values.

How was this patch tested?

Updated some test cases to verify that the problem was fixed.

Did this PR include necessary documentation updates?

• No, this PR does not affect any public API so no need to change the docs.