FlexIndex: multitypemapping: FTS index not sargable if predicate field is not indexed in all typemapping in index

Build: 7.0.0-2005

Steps to reproduce:
have a type mapped index with 2 type mapping : emp and wiki
have "name" fileld indexed only in emp type mapping
for below flex query, fts index is not Sargable

select meta().id from default USE INDEX (USING FTS, USING GSI) where type = "emp" or type = "wiki" and name = "Kory Palmer"

if we have parentheses around "type" predicate like below, FTS index is sargable

select meta().id from default USE INDEX (USING FTS, USING GSI) where (type = "emp" or type = "wiki") and name = "Kory Palmer"