RFR: 8327756: Convert javax/swing/JSlider/4987336/bug4987336.java applet to main

[Prasanta Sadhukhan]

Conversion of manual applet test to main based using PassFailJFrame manual framework

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Commit messages:
 - Fix
 - 8327756: Convert javax/swing/JSlider/4987336/bug4987336.java applet to main

Changes: https://git.openjdk.org/jdk/pull/18261/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18261&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327756
  Stats: 84 lines in 2 files changed: 38 ins; 35 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/18261.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18261/head:pull/18261

PR: https://git.openjdk.org/jdk/pull/18261