RFR: 8295078: TextField blurry when inside an TitledPane -> AnchorPane [v4]

[Marius Hanl]

> The problem here is, that the `AnchorPane` does not use its snapped insets.
> Therefore, the fix is to replace all `getInsets().getXXX` calls with their corresponding `snappedXXXInset()` methods.
> 
> Note: The reason the `AnchorPane` inside  a `TitledPane` is blurry in the first place is because a `TitledPane` applies padding to its content.
> Line 2995 in `modena.css`:
> 
> .titled-pane > .content > AnchorPane {
>     -fx-padding: 0.8em;
> }
> 
> which translates to 9.6px.
> 
> EDIT: This is btw a good example of the JUnit 5 feature `@ParameterizedTest` with `@ValueSource`

Marius Hanl has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:

 - 8295078: Snap anchors as well
 - Merge branch 'master' of https://github.com/openjdk/jfx into 8295078-textfield-blurry
   
   
 Conflicts:
   
	modules/javafx.graphics/src/test/java/test/javafx/scene/layout/AnchorPaneTest.java
 - 8295078: Replace JUnit4 with Junit5 imports
 - 8295078: Adjusted Copyright year
 - 8295078: TextField blurry when inside an TitledPane -> AnchorPane

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

Changes: https://git.openjdk.org/jfx/pull/910/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=910&range=03
  Stats: 184 lines in 3 files changed: 153 ins; 6 del; 25 mod
  Patch: https://git.openjdk.org/jfx/pull/910.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/910/head:pull/910

PR: https://git.openjdk.org/jfx/pull/910