RFR: [bworld] Fix iterating arg types for null checks [v2]

[Chen Liang]

> Discovered this bug when prototyping core reflection. Without this fix, the test fails with:
> 
> testRuntimeChecks/src/Test/Test.java:7: error: bad operand type int for unary operator '<*nullrestrictedchk*>'
>         t.work(args[0], a, b);
>                         ^
> testRuntimeChecks/src/Test/Test.java:7: error: bad operand type boolean for unary operator '<*nullrestrictedchk*>'
>         t.work(args[0], a, b);
>                            ^
> Note: testRuntimeChecks/src/Test/Test.java uses preview features of Java SE 27.
> Note: Recompile with -Xlint:preview for details.
> 2 errors

Chen Liang 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 four additional commits since the last revision:

 - Move test to right place
 - 8377334
 - Merge branch 'bworld' of https://github.com/openjdk/valhalla into fix/nullchk-arg-types-itr
 - [bworld] Fix iterating arg types for null checks

-------------

Changes:
  - all: https://git.openjdk.org/valhalla/pull/2056/files
  - new: https://git.openjdk.org/valhalla/pull/2056/files/e817d117..d1217af9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=2056&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=2056&range=00-01

  Stats: 789 lines in 48 files changed: 198 ins; 440 del; 151 mod
  Patch: https://git.openjdk.org/valhalla/pull/2056.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2056/head:pull/2056

PR: https://git.openjdk.org/valhalla/pull/2056