RFR: 8326461: tools/jlink/CheckExecutable.java fail after JDK-8325342

[SendaoYan]

Before JDK-8325342(commit id:0bcece995840777db660811e4b20bb018e90439b), all the files in build/linux-x86_64-server-release/images/jdk/bin are executable:

![image](https://github.com/openjdk/jdk/assets/24123821/13f0eae2-7125-4d09-8793-8a5a10b785c2)


After JDK-8325342, all the *.debuginfo files in build/linux-x86_64-server-release/images/jdk/bin are not executable:

![image](https://github.com/openjdk/jdk/assets/24123821/c8d190f2-3db0-439b-82b9-5121567cb1d5)


This PR only modifies the testcase to adapt to the modification of the corresponding build script, ignoring the check of debuginfo file executable permissions, and the risk is low

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Commit messages:
 - 8326461: tools/jlink/CheckExecutable.java fail after JDK-8325342

Changes: https://git.openjdk.org/jdk/pull/17958/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17958&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326461
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17958.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17958/head:pull/17958

PR: https://git.openjdk.org/jdk/pull/17958