Hysteresis fix A for the Open placement regression introduced by 170a5c2.
- Growing: a part its breakpoint brings back (print / K, color, the property
block, line / text / dimension style, drawing mode) returns only when the
measured room is there; otherwise it stays in More. Default-layout print / K
are held through data-actions-held (window area keeps its 640px-tier state).
- Open that came back while growing is not pushed into More again by another
part; shrinking still moves Open first, and its return width follows the
narrowest width while it is collapsed.
- Open no longer waits for the parts still in More; the last part leaving More
takes the More button relief into account (measured, never painted).
- A part released at a width is not held again at that width, so the layout
passes always settle (fixes the maximum update depth error found on
sw-header--responsive-more during verification).
Trace 520 -> 1080 (data-width 520 frame): before
[[520,0],[560,0],[600,1],[640,0],[680,0],[720,1],[760,1],[820,1],[900,0],[1080,0]],
after [[520,0],[560,0],[600,1],[640,1],[680,1],[720,1],[760,1],[820,1],[900,1],[1080,1]].
shkim4
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