Review request for JMC-6094: [CS-005] Graphs Y-axis title not shown when changed in windows 10.

[Deepa Avhad]

Hi All,

Please review the small fix for, 

Jira    : https://bugs.openjdk.java.net/browse/JMC-6094
RC      : 'StringBounds()' of y-axis-title  are getting changed in jdk-11 after applying rotation transformation. 
          Thus,Y-axis title not shown when changed in windows 10. Above same is not changed using jdk-8. 
Solution: Storing 'StringBounds()' of y-axis-title before applying rotation transformation.
Test    : Tested on Windows 10, MacOS  and yet to test on Linux.


Thanks,
Deepa