Expose the new stable APIs from ICU4J 69

According to the upstream API coverage report external/icu/icu4j/coverage-exclusion.txt,
the methods should have API coverage running in the existing CtsIcuTestCases.

Bug: 195953235
Test: m droid
Change-Id: I2db67754082e7f0cfa53a3d6b69d23f2fc471072
10 files changed