RFR: 8340208: Additional WebKit 619.1 fixes from WebKitGTK 2.44.4

[Hima Bindu Meda]

Updated additional webkit-619.1 fixes from webkitgtk-2.44.4. Build is successful on all platforms.No issues seen

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Commit messages:
 - WebKit 619.1 fixes from WebKitGTK 2.44.4

Changes: https://git.openjdk.org/jfx/pull/1570/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1570&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340208
  Stats: 546 lines in 103 files changed: 326 ins; 116 del; 104 mod
  Patch: https://git.openjdk.org/jfx/pull/1570.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1570/head:pull/1570

PR: https://git.openjdk.org/jfx/pull/1570