[PieMH]

What

Two fixes to the 1.1.2 popups.

• The usage popup closes on a click anywhere else. It used to close only when you clicked another app. Now it uses StaysOpen=True and closes itself when:

  • you click anywhere else in the window (the window's PreviewMouseDown, unless the mouse is over the popup);
  • you click the terminal or the Browser panel. Those clicks never reach WPF, so the popup closes when focus leaves it;
  • the window loses activation, moves or resizes.

  Esc and clicking the meters to close it work as before. The 250 ms guard keeps a click on the meters from reopening the popup it just closed.

• No black square behind rounded corners. The usage popup and the / list are now AllowsTransparency="True".

Checks

• dotnet build -c Release: 0 warnings.
• dotnet test -c Release: 497/497 passed.
• --smoke: exit 0.
• Tried by hand in the Debug build: clicks in the terminal, the Browser panel, the sidebar and the bottom bar all close the popup, and the corners are clean.

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