RFR: 8359735: [Ubuntu 25.10] java/lang/ProcessBuilder/Basic.java, java/lang/ProcessHandle/InfoTest.java fail due to rust-coreutils

[Vladimir Petko]

To accommodate systems like Ubuntu 25.10 that use Rust coreutils, this PR updates tests that previously assumed BusyBox was the only environment to use symlinks for core utilities.

Changes:
-   `java/lang/ProcessBuilder/Basic.java`: The test is updated to simply verify that `/bin/true `and `/bin/false` are symlinks, removing the hardcoded check for a /bin/busybox target.
 -  ` java/lang/ProcessHandle/InfoTest.java`: The test logic is relaxed. It now confirms that `/bin/sleep` is a symlink and then uses the symlink's target as the expected executable name.

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Commit messages:
 - chore: update copyright year
 - fix: read filename of the symbolic link
 - fix: relax test condition for TrueExe and FalsExe

Changes: https://git.openjdk.org/jdk/pull/25838/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25838&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8359735
  Stats: 9 lines in 2 files changed: 2 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/25838.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25838/head:pull/25838

PR: https://git.openjdk.org/jdk/pull/25838