[DOM] Blur portaled Fragment focus targets - #37161
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blur() early-exited when activeElement was outside the React host parent, so focus() on portaled children could not be cleared.
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focus() passes through portals as it attempts focus down the fiber tree. blur() exited early based on a containment check, causing it to stop at portals. The result could be a focused element that cannot be blurred. Follow up to #37125, which made blur() apply recursively to be consistent with focus(). DiffTrain build for [278d318](278d318)
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focus() passes through portals as it attempts focus down the fiber tree. blur() exited early based on a containment check, causing it to stop at portals. The result could be a focused element that cannot be blurred. Follow up to #37125, which made blur() apply recursively to be consistent with focus(). DiffTrain build for [278d318](278d318)
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focus() passes through portals as it attempts focus down the fiber tree. blur() exited early based on a containment check, causing it to stop at portals.
The result could be a focused element that cannot be blurred.
Follow up to #37125, which made blur() apply recursively to be consistent with focus().