RFR: 8367719: Refactor JNI code that uses class_to_verify_considering_redefinition() [v2]

[Ioi Lam]

> Simplify the boilerplate code in jvm.cpp that calls `JvmtiThreadState::class_to_verify_considering_redefinition()`, and reduce the number of `InstanceKlass::cast()` calls.
> 
> I also changed a few fields/arguments from `Klass*` to `InstanceKlass*` as these are used exclusively with `InstanceKlass*`.

Ioi Lam has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - @coleenp and @dholmes-ora comments -- simplify implementation; fixed code formatting
 - Merge branch 'master' into 8367719-refactor-jni-code-that-uses-class_to_verify_considering_redefinition
 - 8367719: Refactor JNI code that uses class_to_verify_considering_redefinition()

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27303/files
  - new: https://git.openjdk.org/jdk/pull/27303/files/e9d9546a..2504e1a6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27303&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27303&range=00-01

  Stats: 10736 lines in 233 files changed: 4911 ins; 2614 del; 3211 mod
  Patch: https://git.openjdk.org/jdk/pull/27303.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27303/head:pull/27303

PR: https://git.openjdk.org/jdk/pull/27303