Revert "Use structural equality for A11yNodeInfo#mChildNodeIds"

This reverts commit df99184a81c4a9be3073dc3e6d396a950c9c6be2.

Reason for revert: Crashes settings - b/73440274

Bug: 73440274
Change-Id: I529874a6110e04d6b5b7723906a03330cd637d1d
2 files changed