fix(tree-view): add aria multiselectable attribute when needed (backport to 16.x) #1572
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Backport 71b0056 from #1563.
## PR Checklist
Please check if your PR fulfills the following requirements:
PR Type
What kind of change does this PR introduce?
What is the current behavior?
clr-tree
throws ExpressionChangedAfterItHasBeenCheckedError when settingaria-multiselectable
.Issue Number: #1562, CDE-2301
What is the new behavior?
Aria multiselectable attribute is added when needed.
Does this PR introduce a breaking change?
Other information