Update numbering systems

[ryzokuken]

The spec deals with numbering systems as specified by CLDR at various places, including a table of numbering systems with simple digit mappings. We should update this wrt unicode-org/cldr#3658.

[sffc]

Previously:

• 2022: Normative: Add new numbering systems "kawi" and "nagm" #714
• 2021: Normative: Add new numbering system "tnsa" #614
• 2020: Normative: Update Table 4 Numbering systems #438

Decision in 2023 on how to keep these updated moving forward:

be explicit in the spec that sections which depend on CLDR/Unicode are only kept in sync on a best-effort basis. These are two separate specs with two different lifecycles.

That language landed in #779

[FrankYFTang]

The 8 added are
"gara" >Garay Digits
"gukh" >Gurung Khema Digits
"krai" >Kirat Rai Digits
"mymrepka" >Myanmar Eastern Pwo Karen Digits
"mymrpao" >Myanmar Pao Digits
"onao" >Ol Onal Digits
outlined" >Outlined Digits
sunu" >Sunuwar Digits

We shoudl consider updating ECMA402 after CLDR release that and ICU widely support that. I belive that will be around Q3 2024. And around Q4 204 we should create a normative PR to include that and talk about that around Nov or Dec 2024 TC39 meeting.

@anba @sffc Does that sound good to youi?