RFR: 8308930: [JVMCI] TestUncaughtErrorInCompileMethod times out [v3]

[Doug Simon]

> This PR makes TestUncaughtErrorInCompileMethod more robust against HotSpot compilation scheduling variability which should prevent timeouts in this test.

Doug Simon has updated the pull request incrementally with one additional commit since the last revision:

  [skip ci] clarify that main loop is doing busy work just to trigger compilation

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14173/files
  - new: https://git.openjdk.org/jdk/pull/14173/files/8faf2b2e..73c065e6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14173&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14173&range=01-02

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14173.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14173/head:pull/14173

PR: https://git.openjdk.org/jdk/pull/14173