[birt-dev] CheckIn: Bugzilla#151956 - Need select twice in context menu

["Yulin Wang" <yulin.wang@xxxxxxxxxxx>]

- Summary:
Need select twice in context menu to set col as chart x/y series

- Bugzilla Bug (s) Resolved:
151956

- Description:
Reused the context menu bound in header button to display by right-click.

- Tests Description: Manual test
- Notes to Build Team: None
- Notes to Developers: None
- Notes to QA: None
- Notes to Documentation: None

- Files Edited:
/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/TaskSelectData.java
/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/internal/CustomPreviewTable.java

- Files Added:

- Files Deleted