RFR: 8330852: All callers of JvmtiEnvBase::get_threadOop_and_JavaThread should pass current thread explicitly

[Alex Menkov]

Some cleanup related to JvmtiEnvBase::get_threadOop_and_JavaThread method

Testing: tier1-6

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Commit messages:
 - fix

Changes: https://git.openjdk.org/jdk/pull/18986/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18986&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330852
  Stats: 42 lines in 3 files changed: 3 ins; 10 del; 29 mod
  Patch: https://git.openjdk.org/jdk/pull/18986.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18986/head:pull/18986

PR: https://git.openjdk.org/jdk/pull/18986