RFR: 8331467: ImageReaderFactory can cause a ClassNotFoundException if the default FileSystemProvider is not the system-default provider

[liyazzi]

For two cases:

1. When the ImageReaderFactory was loaded by local jdk,that means the ImageReaderFactory was loaded by boot class loader,then init the `Path BOOT_MODULES_JIMAGE` by using `sun.nio.fs.DefaultFileSystemProvider` which is obtained through reflection,due to it is in jdk internal.
2. When loaded by a target jdk, such as jdk8 runtime, then use the Java 8 compatible APIs: `FileSystems.getDefault()` to init the `BOOT_MODULES_JIMAGE` field.
Then we can avoid the circular dependencies in class loading caused by loading the defaultSystemProvider.

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Commit messages:
 - deal with trailing whitespace
 - use LF
 - delete foo
 - turn CRLF to CR
 - turn CRLF to CR
 - Update CustomFileSystemProviderTest.java
 - delete extraneous whitespace
 - 8331467: Fix JDK-8331467 ImageReaderFactory can cause a ClassNotFoundException if the default FileSystemProvider is not the system-default provider

Changes: https://git.openjdk.org/jdk/pull/22628/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22628&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331467
  Stats: 317 lines in 2 files changed: 314 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/22628.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22628/head:pull/22628

PR: https://git.openjdk.org/jdk/pull/22628