Request to fix Expandable Item BUG

[tcqq]

@davideas First set the Item default to collapse, then input one search value , then cancel the search. Now click on any item and try to expand the collapse. But after the item tries to open collapse, the item will automatically close the collapse.

[tcqq]

@davideas

[tcqq]

Bug 2: When enter "su" in the search box and cancel the search, the above problem will occur. This is because mExpandedFilterFlags incorrectly cached the status when the second input of the first search, so this problem is caused.

[davideas]

@tcqq, I finally had time to look into it. I'm fixing it.