RFR: 8308943: jdk.internal.le build fails on AIX [v2]

[Jan Lahoda]

> A simpler alternative to https://github.com/openjdk/jdk/pull/14176 - it only creates a stub of `JDKNativePty` for AIX, throwing `UnsupportedOperationException`. JLine will then either use the next provider (i.e. "exec", for JShell), or dumb terminal.

Jan Lahoda has updated the pull request incrementally with one additional commit since the last revision:

  Removing unnecessary import of a class that does not exist for this system.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14247/files
  - new: https://git.openjdk.org/jdk/pull/14247/files/01782019..cd0567db

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14247&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14247&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14247.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14247/head:pull/14247

PR: https://git.openjdk.org/jdk/pull/14247