RFR: 8343427: Class file load hook crashes on archived classes from multi-release JARs [v6]

[Calvin Cheung]

> Currently, when retrieving a ClassFileStream during runtime, we call into the zip library to retrieve the stream based only on a class name. This doesn't work well if the class is in a multi-release jar under a versioned directory such as `META-INF/versions/9/Foo.class`. To address this issue, this change calls the java api `ClassLoader.getResourceAsStream()` to retrieve the stream.
> 
> Passed tiers 1 - 4 testing.

Calvin Cheung has updated the pull request incrementally with one additional commit since the last revision:

  remove assert in filemap.cpp

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22262/files
  - new: https://git.openjdk.org/jdk/pull/22262/files/a1b13168..1f622809

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22262&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22262&range=04-05

  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22262.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22262/head:pull/22262

PR: https://git.openjdk.org/jdk/pull/22262