RFR: 8358770: incubator.richtext pom missing dependency on incubator.input

[Kevin Rushforth]

This PR adds a missing maven dependency for `jfx.incubator.richtext` on the `jfx.incubator.input` module. The dependency is correctly present in the `module-info.java` of `jfx.incubator.richtext` as well as the gradle dependency for the project. It's only the maven dependency that is missing. While fixing this, I noticed that there is an unnecessary maven dependency in the `incubator.richtext` and `incubator.input` projects on the `graphics` project. Both projects already list `controls`, so do not need to list `graphics` or `base` (see the `fxml` and `web` projects for comparison).

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Commit messages:
 - incubator.richtext pom missing dependency on incubator.input

Changes: https://git.openjdk.org/jfx/pull/1821/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1821&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358770
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jfx/pull/1821.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1821/head:pull/1821

PR: https://git.openjdk.org/jfx/pull/1821