sw: replace SwEventListenerContainer in SwXFootnote
sw: replace SwEventListenerContainer in SwXFootnote

Change-Id: I03c1b3ad6a774f00993279c0830029708ee966ba

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core