RFR: 8003887: File.getCanonicalFile() does not resolve symlinks on MS Windows

[Brian Burkhalter]

Return the final path derived from the string returned by `canonicalize0()`.

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Commit messages:
 - 8003887: File.getCanonicalFile() does not resolve symlinks on MS Windows

Changes: https://git.openjdk.org/jdk/pull/20801/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20801&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8003887
  Stats: 48 lines in 2 files changed: 24 ins; 20 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/20801.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20801/head:pull/20801

PR: https://git.openjdk.org/jdk/pull/20801