RFR: 8264127: ListCell editing status is true, when index changes while editing [v7]

[Florian Kirmaier]

> Fixing ListCell editing status is true, when index changes while editing.

Florian Kirmaier has updated the pull request incrementally with one additional commit since the last revision:

  8264127:
  More changes based on codereview.
  Simplified the tests, we are now using for both cases "test-factory-methods"

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/441/files
  - new: https://git.openjdk.java.net/jfx/pull/441/files/e1b52234..25987e75

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=441&range=06
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=441&range=05-06

  Stats: 47 lines in 2 files changed: 23 ins; 18 del; 6 mod
  Patch: https://git.openjdk.java.net/jfx/pull/441.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/441/head:pull/441

PR: https://git.openjdk.java.net/jfx/pull/441