[crac] RFR: 8353064: [CRaC] ProblemList jdk/crac/LinkedCleanableRefTest

[Timofei Pushkin]

Adds `jdk/crac/LinkedCleanableRefTest` into a ProblemList until it is fixed.

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Commit messages:
 - ProblemList LinkedCleanableRefTest

Changes: https://git.openjdk.org/crac/pull/218/files
  Webrev: https://webrevs.openjdk.org/?repo=crac&pr=218&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353064
  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/crac/pull/218.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/218/head:pull/218

PR: https://git.openjdk.org/crac/pull/218