[jdk17u-dev] RFR: 8340552: Harden TzdbZoneRulesCompiler against missing zone names

[Antonio Vieiro]

Clean backport of [JDK-8340552](https://bugs.openjdk.org/browse/JDK-8340552).

Tested with tier1 tests and also processing data [from tzdata/2024b.](https://data.iana.org/time-zones/releases/tzdb-2024b.tar.lz)

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Commit messages:
 - Backport bc4abb4379ced7ddfb3d173d2dfc669a4b11d12f

Changes: https://git.openjdk.org/jdk17u-dev/pull/3076/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3076&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340552
  Stats: 12 lines in 1 file changed: 8 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3076.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3076/head:pull/3076

PR: https://git.openjdk.org/jdk17u-dev/pull/3076