Incorrect mapping from separatorPoliciy to separatorSuppressionPolicy

Daffodil allows use of the deprecated separatorPolicy property and internally maps it to the new separatorSupressionPolicy property. This is done here:

https://github.com/apache/daffodil/blob/main/daffodil-lib/src/main/scala/org/apache/daffodil/lib/schema/annotation/props/ByHandMixins.scala#L198-L201

So our mappings are:

required -> never
suppressed  -> anyEmpty
suppressedAtEndStrict -> trailingEmpty
suppressedAtEndLax -> trailingEmptyStrict 

However, according to the errata document (https://ogf.org/documents/GFD.214.pdf), the mappings should be:

required -> never
suppressed -> anyEmpty
suppressedAtEndLax -> trailingEmpty
suppressedAtEndStrict -> trailingEmptyStrict

Note that suppressedAtEndStrict and suppressedAtEndLax are swapped and do not match the errata document. Comparing the wording of older versions of the DFDL spec, it does seem like our mapping is incorrect.