RFR: 8370465: Right to Left Orientation Issues with MenuItem Component.

[Prasanta Sadhukhan]

Icon rendering offset is wrong for RTL orientation which is why the icon was not rendered properly..Also, LEADING horizontal text position was not accounted for..

Before fix

<img width="386" height="487" alt="image" src="https://github.com/user-attachments/assets/d33140e0-85f1-471c-abf4-bfc7992cd79e" />

With fix

<img width="384" height="491" alt="image" src="https://github.com/user-attachments/assets/9df65234-2b84-48ae-b85e-eefdbfbd544e" />

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Commit messages:
 - 8370465: Right to Left Orientation Issues with MenuItem Component.

Changes: https://git.openjdk.org/jdk/pull/27968/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27968&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370465
  Stats: 13 lines in 3 files changed: 8 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/27968.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27968/head:pull/27968

PR: https://git.openjdk.org/jdk/pull/27968