RFR: 8378178: Change Thread::_allocated_bytes from jlong to uint64_t

[Albert Mingkun Yang]

Replace `jlong` with `uint64_t` for `Thread::_allocated_bytes` and `ThreadService::_exited_allocated_bytes`.

Test: tier1

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Commit messages:
 - allocated-bytes-type

Changes: https://git.openjdk.org/jdk/pull/29792/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29792&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378178
  Stats: 26 lines in 12 files changed: 0 ins; 0 del; 26 mod
  Patch: https://git.openjdk.org/jdk/pull/29792.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29792/head:pull/29792

PR: https://git.openjdk.org/jdk/pull/29792