[jdk20] RFR: 8298463: tools/javac/modules/EdgeCases.java fails on Windows after JDK-8297988

[Jan Lahoda]

`JavaFileObject.getName()` uses platform-specific name separators in the path. The test needs to normalize name separators before comparing them with expected output.

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Commit messages:
 - 8298463: tools/javac/modules/EdgeCases.java fails on Windows after JDK-8297988

Changes: https://git.openjdk.org/jdk20/pull/12/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20&pr=12&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298463
  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk20/pull/12.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/12/head:pull/12

PR: https://git.openjdk.org/jdk20/pull/12