format-date and format-dateTime missing Roman format

[mstevan]

@mstevan
test-set: format-dateTime.xml, format-date.xml
test-cases: format-dateTime-001d, format-date-001d

@team
Seems that format-dateTime and format-date do not support Roman months.

Input:
format-dateTime(dateTime("2003-09-07T09:15:06.456"),"[D1] [MI] [Y]")

Output:
⚠️ ️️here was an error.
 
Code: [RBST0002] (this code can be looked up in the documentation and specifications).
 
Location information: file:/Users/mstevan/Documents/:LINE:1:COLUMN:0:
 
"[D1] [MI] [Y]": first presentation modifier not supported: I

Expected output:
7 IX 2003