I somehow missed the last line last time I proposed https://github.com/tc39/test262/pull/2111

CLDR 35 change "and" to "&" for the list form pattern "short"
see https://unicode.org/cldr/trac/ticket/11520
Also compare
https://www.unicode.org/repos/cldr/tags/release-34/common/main/en.xml
against
https://www.unicode.org/repos/cldr/tags/release-35-beta/common/main/en.xml

Notice the addition of
<listPattern type="standard-short">
<listPatternPart type="start">{0}, {1}</listPatternPart>
<listPatternPart type="middle">{0}, {1}</listPatternPart>
<listPatternPart type="end">{0}, & {1}</listPatternPart>
<listPatternPart type="2">{0} & {1}</listPatternPart>
</listPattern>

Based on the changes in https://github.com/tc39/proposal-intl-list-format/pull/43
We now allow  'narrow' style for all types

Sync with https://github.com/tc39/proposal-intl-list-format/pull/36

This was changed in https://github.com/tc39/proposal-intl-list-format/pull/27.

* Changes Intl.ListFormat tests reflecting spec

Reflect https://github.com/tc39/proposal-intl-list-format/pull/27
while style:"narrow" and type is not "unit".

* add cases for throws

* remove commetns which cause lint error

This was added in https://github.com/tc39/proposal-intl-list-format/pull/25.

I don't know how to test that the option has any effect, so this just checks
that it is read and verified.

Fixes #1705.

The specification changed in https://github.com/tc39/proposal-intl-list-format/pull/13.