[jdk17u-dev] RFR: 8353755: Add a helper method to Util - findComponent()

[Goetz Lindenmaier]

I backport this for parity with 17.0.19-oracle

Resolved Copyright.

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

Commit messages:
 - backport 354910381a9319723d43a6182269b5449c02a527

Changes: https://git.openjdk.org/jdk17u-dev/pull/4223/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4223&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353755
  Stats: 54 lines in 1 file changed: 38 ins; 2 del; 14 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4223.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4223/head:pull/4223

PR: https://git.openjdk.org/jdk17u-dev/pull/4223