FT.CREATE with both SORTABLE and INDEXMISSING fails #404

Redis Version: 7.4.2
Search: 2.10.12
ReJSON: 2.8.8
NRedisStack version: 0.13.2

Creating a schema for a numeric (and text) field with both missingIndex and sortable set to true fails with "Field INDEXMISSING does not have a type":

schema.AddNumericField(new FieldName("test", "test"), missingIndex: true, sortable: true);

This raw query fails the same way:

FT.CREATE idx:test ON JSON PREFIX 1 test: SCHEMA "$.test" AS test NUMERIC SORTABLE INDEXMISSING

It appears that INDEXMISSING must come before SORTABLE since the following works:

FT.CREATE idx:test ON JSON PREFIX 1 test: SCHEMA "$.test" AS test NUMERIC INDEXMISSING SORTABLE

The AddFieldTypeArgs in Schema.cs should be updated to add INDEXMISSING first.