[QA][Call for Review] Patch of 3 svt cases

[Yi Xuan Liu <li...@gmail.com>]

hi,

I add 3 svt cases

The first case is a sd case:
Steps:
1. Open the sample file "DragOLEObject", which contains three different OLE
objects
2. Copy and paste these three objects
3. Drag the pasted objects to other place
4. loop 1~3

The second case is also a sd case
Steps:
1. Open the sample file "complex.odp"
2. Switch different views(Slide Sorter view, notes view, handout view,
slide master, notes master) on this sample file to check whether exists
crash or freeze issue
3. Close without saving
4. loop 1~3

The third case is a sc case
Steps:
1. Open 6 files, which all contain chart
2. Switch between these 6 files
3. Close them one by one
4. Loop 1~3

The patch link is https://issues.apache.org/ooo/show_bug.cgi?id=120758

Please help to review. Thanks!