Bug 148751 [regression]Page break in data inside detail of list with group will cause issue in pdf
Description: Page break in data inside detail of list with group will cause issue in pdf. Steps to reproduce: 1. Insert a list, add a group 2. Insert a data to list detail, set page-break-after always to it. 3. Preview in web viewer and pdf Expected result: Data are displayed with correct page break Actual result: In pdf, data are lost. The group contains 5 data rows but in pdf only 2 data rows are displayed.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFListGroupLM.java
implements
			IBlockStackingLayoutManager
{
	public PDFListGroupLM( PDFLayoutEngineContext context,
			PDFStackingLM parent, IContent content, IContentEmitter emitter,
			IReportItemExecutor executor )
	{
		super( context, parent, content, emitter, executor );
	}
	protected IListBandContent getHeader( )
	{
		return (IListBandContent) ( (IGroupContent) content ).getHeader( );
	}
	protected IReportItemExecutor createExecutor( )
	{
		return new ListContainerExecutor( content, executor );
	}
	protected void repeatHeader( )
	{
		if ( isFirst )
		{
			isFirst = false;
			return;
		}
		if ( !isRepeatHeader( ) )
		{
			return;