RFR: 8333714: Cleanup the usages of CHECK_EXCEPTION_NULL_FAIL macro in java launcher [v2]

[Jaikiran Pai]

> Can I please get a review for this change which proposes to remove the `CHECK_EXCEPTION_NULL_FAIL` macro from the `java` launcher code?
> 
> This addresses https://bugs.openjdk.org/browse/JDK-8333714. As noted in that JBS issue, in a recent PR discussion, it was suggested https://github.com/openjdk/jdk/pull/18786#issuecomment-2147452633 that this macro should be removed and the failure of a JNI specified operation (the ones for which this macro is being used) should be determined based on a `NULL` value returned from that function. The commit in this PR removes this macros and updates the call sites to do a `NULL` check.
> 
> Given the nature of this change, no new tests have been added. tier1, tier2 and tier3 testing passed successfully with these changes.

Jaikiran Pai has updated the pull request incrementally with one additional commit since the last revision:

  improve comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/19576/files
  - new: https://git.openjdk.org/jdk/pull/19576/files/1c2a3dfb..1b3d630a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19576&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19576&range=00-01

  Stats: 20 lines in 1 file changed: 0 ins; 8 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/19576.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19576/head:pull/19576

PR: https://git.openjdk.org/jdk/pull/19576