RFR: 8298808: Check `script` code on detecting the base locales [v2]

[Naoto Sato]

> Fixing `CLDRConverter` build tool to not regard [new locales](https://github.com/unicode-org/cldr/pull/2508/files#diff-94cbefde02914335da884f768063a06a84ad651ee4e56cdb1cb90625d7776731) introduced in CLDR 43 as one of the base locales. Otherwise they would incorrectly go into `java.base` module, then a test case fails.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  Allow Latin script by default

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Changes:
  - all: https://git.openjdk.org/jdk/pull/11684/files
  - new: https://git.openjdk.org/jdk/pull/11684/files/28b01e21..9191b601

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11684&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11684&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11684.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11684/head:pull/11684

PR: https://git.openjdk.org/jdk/pull/11684