<i18n dev> RFR: 8300706: Use @snippet in java.text [v3]

[Justin Lu]

> Some classes / interfaces in java.text have already implemented JEP 413.
> 
> This PR implements _JEP 413: Code Snippets in Java API Documentation_ for the rest of [java.text](https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/text/package-summary.html) including:
> - BreakIterator
> - CharacterIterator
> - DateFormatSymbols
> - DecimalFormat
> - NumberFormat 
> 
> Code examples using <pre> ... </pre> blocks are replaced with the @ snippet syntax where applicable.

Justin Lu has updated the pull request incrementally with three additional commits since the last revision:

 - Close catch on same line
 - Use pattern matching instanceOf, expression switch statement, and improve for loop readability
 - Use pattern IOf (1st snippet)

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/12121/files
  - new: https://git.openjdk.org/jdk/pull/12121/files/5b0bfe85..f5f9632c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12121&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12121&range=01-02

  Stats: 19 lines in 1 file changed: 0 ins; 4 del; 15 mod
  Patch: https://git.openjdk.org/jdk/pull/12121.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12121/head:pull/12121

PR: https://git.openjdk.org/jdk/pull/12121