RFR: 8370520: GenShen: Track and report on promotion failures

[William Kemper]

Keep track of promotion failures. Report the number of failures and total number of bytes that could not be promoted. These changes were hoisted out of https://github.com/openjdk/jdk/pull/27632.

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Commit messages:
 - Actually log number of objects and their total size that failed promotion
 - Track and report number of objects and their total size that failed promotion

Changes: https://git.openjdk.org/jdk/pull/27962/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27962&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370520
  Stats: 32 lines in 3 files changed: 23 ins; 3 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/27962.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27962/head:pull/27962

PR: https://git.openjdk.org/jdk/pull/27962