RFR: 8351108: ImageIO.write(..) fails with exception when writing JPEG with IndexColorModel [v5]

[Jeremy Wood]

> Previously ImageTypeSpecifier treated all TYPE_BYTE_INDEXED as if they were opaque.
> 
> In this ticket's case: an ImageWriter received the wrong ImageTypeSpecifier and mistakenly indicated it *could* support a BufferedImage. But when the actual BufferedImage arrived (which was translucent), the ImageWriter threw an exception.
> 
> Instead:
> Now the ImageTypeSpecifier accurately describes the given BufferedImage.

Jeremy Wood has updated the pull request incrementally with six additional commits since the last revision:

 - Merge branch 'JDK-8351108' of https://github.com/mickleness/jdk into JDK-8351108
 - Update test/jdk/javax/imageio/plugins/jpeg/JpegWriterWriteNonOpaqueIndexColorModelTest.java
   
   Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>
 - Update test/jdk/javax/imageio/plugins/jpeg/JpegWriterWriteNonOpaqueIndexColorModelTest.java
   
   Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>
 - 8351108: removing method javadoc
   
   This is in response to:
   https://github.com/openjdk/jdk/pull/23884#discussion_r1987896914
 - Update test/jdk/javax/imageio/plugins/jpeg/JpegWriterWriteNonOpaqueIndexColorModelTest.java
   
   Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>
 - Update test/jdk/javax/imageio/plugins/jpeg/JpegWriterWriteNonOpaqueIndexColorModelTest.java
   
   Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/23884/files
  - new: https://git.openjdk.org/jdk/pull/23884/files/a69c2e05..0bf592cc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23884&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23884&range=03-04

  Stats: 16 lines in 1 file changed: 2 ins; 11 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/23884.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23884/head:pull/23884

PR: https://git.openjdk.org/jdk/pull/23884