Architecture showed bare arrows at the right end of its subtab row while
Galaxy has "← Back", "Forward →" and "▾" at the start of its toolbar.
The controls now come first in the row with Galaxy's words and tooltips;
the row measures itself with the shared toolbar fit and shows the glyphs
alone once the tabs would scroll.
The Recent menus of both workspaces stayed open over the content. One
shared hook (graph/use-dismissible-menu.ts) closes them on a press, wheel
or focus outside, on Escape (which no longer reaches the page), on a chosen
entry and whenever the place changes.
The K27 browser check counts an in-view "← Back" outside the shared
history group only, since the shared one now carries the same words.
Signed-off-by: Bernhard Jackiewicz <bj@techport.io>
Bernhard Jackiewicz
397b5dc68d