RFR: 8313650: Add hasProperties method to MenuItem and Toggle [v2]

[Andy Goryachev]

> Adding new 
> `boolean hasProperties()`
>  method to MenuItem and Toggle only.
> 
> This change requires CSR.

Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:

  review comments

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1215/files
  - new: https://git.openjdk.org/jfx/pull/1215/files/a402e0db..dce85ebc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1215&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1215&range=00-01

  Stats: 6 lines in 2 files changed: 1 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jfx/pull/1215.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1215/head:pull/1215

PR: https://git.openjdk.org/jfx/pull/1215