RFR: 8352994: ZGC: Fix regression introduced in JDK-8350572 [v2]

[Stefan Karlsson]

> We have seen a bunch of timeouts that all points towards the introduction of a check against VMError::is_error_reported_in_current_thread() in the ZGC verification code. I propose this workaround to first check if there's really an error reporting event that is going on by checking VMError::is_error_reported().
> 
> The underlying performance issue (or hang(?)) when calling os::current_thread_id() is being investigated as a separate bug. This fix just tries to clean up issues we see when running ZGC testing.
> 
> Thanks to @plummercj for digging into this and proposing the same workaround.
> 
> Testing: GHA is clean, I'll run this through a few tiers of our CI pipeline

Stefan Karlsson has updated the pull request incrementally with one additional commit since the last revision:

  Remove test from ProblemList

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24349/files
  - new: https://git.openjdk.org/jdk/pull/24349/files/8db3f6d0..fe07a340

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24349&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24349&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24349.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24349/head:pull/24349

PR: https://git.openjdk.org/jdk/pull/24349