Why does not Unicode_3_2 have propertyValueAliases for key blk=alphabeticpresentationforms?

[regisd]

While re-generating the Unicode data with the ucd_generator (#828), I had an unexpected output with Unicode 3.2.0

• propertyValueAliases: Not true that <{ahex=asciihexdigit, alpha=alphabetic, arab=arabic, etc.
• is equal to <{ahex=asciihexdigit, alpha=alphabetic, arab=arabic, etc.
• The subject has the following extra entries: {blk=alphabeticpresentationforms=block=alphabeticpresentationforms, blk=arabic=block=arabic, etc.

@sarowe Why does the current Unicode_3_2.java not contain the block blk value aliases?

The value block=alphabeticpresentationforms is used in the interval. L3928

And the alias is defined in PropertyAliases-3.2.0.txt

# Non-enumerated Properties
# ================================================
age       ; Age
blk       ; Block

Shouldn't we emit the alias in that case?