[jdk25u-dev] RFR: 8068378: [TEST_BUG]The java/awt/Modal/PrintDialogsTest/PrintDialogsTest.java instruction need to update

[Roland Mesde]

Backporting JDK-8068378: [TEST_BUG]The java/awt/Modal/PrintDialogsTest/PrintDialogsTest.java instruction need to update.

This PR updates the PrintDialogsTest.java test instructions for clarity and formatting, and removed it from ProblemList.txt.

For parity with Oracle JDK.

Ran related test on macos-aarch64:

~/github/jtreg/build/images/jtreg/bin/jtreg -jdk build/macosx-aarch64-server-release/images/jdk -m test/jdk/java/awt/Modal/PrintDialogsTest/PrintDialogsTest.java

The updated instructions:

<img width="1167" height="764" alt="UpdatedInstructions" src="https://github.com/user-attachments/assets/b27ff101-cada-42ad-80cf-55d21e4d3f75" />

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Commit messages:
 - Backport 6e2ab84154e7cc11a31026c588a7dc3ceb446cc2

Changes: https://git.openjdk.org/jdk25u-dev/pull/278/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=278&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8068378
  Stats: 36 lines in 3 files changed: 1 ins; 6 del; 29 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/278.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/278/head:pull/278

PR: https://git.openjdk.org/jdk25u-dev/pull/278