RFR: 8358623: Avoid unnecessary data copying in ICC_Profile

[Sergey Bylokhov]

This PR simplifies several aspects of the ICC_Profile class:

- [Change 1](https://github.com/openjdk/jdk/pull/25650/commits/426a608b1df9e39e221d05e7374a3fecf6e6cf30):
    The ICC_Profile.getInstance(byte[] data) method used to copy the profile header for validation. This copy appears redundant, as the original data array is used later anyway. This logic was originally introduced by [JDK-8347377](https://bugs.openjdk.org/browse/JDK-8347377).

- [Change 2](https://github.com/openjdk/jdk/pull/25650/commits/4035c8b1f7e1dcbc9941ead939218bba47b0a2fe):
    In some places, the code retrieves the profile header using getData(icSigHead), which always creates a new array. It is now replaced with private getData(cmmProfile(), icSigHead) to avoid unnecessary copying. To clarify the purpose of the private method, I have added documentation.

 - [Change 3](https://github.com/openjdk/jdk/pull/25650/commits/96ad456593de3dd68c3ae6840fffee7bac68bc0c):
After Change 2, static analysis tools began reporting a potential NPE when using getData(cmmProfile(), icSigHead), since it may return null. To address this, the internal implementation of getData was updated to always return a non-null value or throw an exception. The public method now catches this exception and returns null, as required by the specification. **Note**: this potential NPE is not a regression introduced by any changes, it simply became easier for tools to detect due to the simplified code.

@prrace @honkar-jdk please take a look

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Commit messages:
 - Update CheckVersions.java
 - Create CheckVersions.java
 - ICC -> CMM
 - Eliminate possible NPE when getData is used
 - Replace  getData(icSigHead) by the getData(cmmProfile(), icSigHead)
 - Avoid arraycopy in getInstance(byte[])

Changes: https://git.openjdk.org/jdk/pull/25650/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25650&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358623
  Stats: 124 lines in 4 files changed: 89 ins; 18 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/25650.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25650/head:pull/25650

PR: https://git.openjdk.org/jdk/pull/25650