RFR: 8345259: Disallow ALL-MODULE-PATH without explicit --module-path [v8]

[Severin Gehwolf]

> Please review this extension to #22609 which now disallows `ALL-MODULE-PATH` without explicit `--module-path` option or a non-existent module path. In addition, this fixes a bug mentioned in #22609 when `ALL-MODULE-PATH` and `--limit-modules` are used in combination. It failed earlier and passes now due to alignment of `ModuleFinder`s. With this patch JEP 493 enabled builds and regular JDK builds behave the same in terms of `ALL-MODULE-PATH`.
> 
> When an explicit module path is being added, there is no difference. All modules on that path will be added as roots. Tests have been added for the various cases and existing tests updated to allow for them to run on JEP 493 enabled builds. Thoughts?
> 
> Testing:
> - [x] GHA, `test/jdk/tools/jlink` (all pass)
> - [x] Added jlink test.

Severin Gehwolf has updated the pull request incrementally with two additional commits since the last revision:

 - Test cleanup
 - Only use the combined list when creating the finder

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22494/files
  - new: https://git.openjdk.org/jdk/pull/22494/files/b577b4da..8fdf6cd2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22494&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22494&range=06-07

  Stats: 136 lines in 2 files changed: 24 ins; 65 del; 47 mod
  Patch: https://git.openjdk.org/jdk/pull/22494.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22494/head:pull/22494

PR: https://git.openjdk.org/jdk/pull/22494