RFR: 8376218: Improve KeyUtil::getKeySize coverage [v2]

[Mikhail Yankelevich]

> Improving `public static final int getKeySize(AlgorithmParameters parameters)` coverage

Mikhail Yankelevich has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  JDK-8376218: Improve KeyUtil::getKeySize coverage

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29389/files
  - new: https://git.openjdk.org/jdk/pull/29389/files/b18b815b..f50afc73

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29389&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29389&range=00-01

  Stats: 14 lines in 1 file changed: 1 ins; 3 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/29389.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29389/head:pull/29389

PR: https://git.openjdk.org/jdk/pull/29389