Handling Popup window's script injection

[lilla28]

Changes:

• First commit : Added IWindowPolicy with DefaultPopupWindowPolicy to not inject scripts into popups - opened window via the window.open JS call and track the Window's and ContentPane's child popup windows to enable closing windows if their parent is closed in case of popups.
• Second commit: PLEASE BE AWARE I am happy to drop this commit I was just doing some little experiment/research on the Testably and TestableIO upgrades.

Also please be aware I have an another solution for the script inejction popup windows where I am using the WebWindowOptions to create a FloatingOnly window instead of creating a PopupWindow class. Commit can be found here: [https://github.com/morganstanley/ComposeUI/commit/f41a19950dfa32cd5acc2682467650f0e039eb5f]

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 135 lines in your changes missing coverage. Please review.

Project coverage is 67.34%. Comparing base (bb3c3d1) to head (7a8c5b2).

Files with missing lines	Patch %	Lines
src/shell/dotnet/Shell/WebContent.xaml.cs	0.00%	49 Missing ⚠️
src/shell/dotnet/Shell/App.xaml.cs	0.00%	24 Missing ⚠️
src/shell/dotnet/Shell/Layout/LayoutManager.cs	0.00%	21 Missing ⚠️
src/shell/dotnet/Shell/Popup/PopupWindow.xaml.cs	0.00%	21 Missing ⚠️
src/shell/dotnet/Shell/Modules/ModuleService.cs	0.00%	17 Missing ⚠️
src/shell/dotnet/Shell/Popup/DefaultPopupPolicy.cs	0.00%	1 Missing ⚠️
src/shell/dotnet/Shell/Popup/PopupWindow.xaml	0.00%	1 Missing ⚠️
src/shell/dotnet/Shell/WebContent.xaml	0.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (100.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #956      +/-   ##
==========================================
- Coverage   67.88%   67.34%   -0.55%     
==========================================
  Files         308      311       +3     
  Lines        9131     9202      +71     
  Branches     1052     1057       +5     
==========================================
- Hits         6199     6197       -2     
- Misses       2701     2774      +73     
  Partials      231      231              

Files with missing lines	Coverage Δ
...rganStanley.ComposeUI.AppDirectory/AppDirectory.cs	85.38% <ø> (ø)
...Stanley.ComposeUI.DesktopAgent/Fdc3DesktopAgent.cs	78.87% <ø> (ø)
src/shell/dotnet/Shell/MainWindow.xaml.cs	0.00% <ø> (ø)
src/shell/dotnet/Shell/WebContentPane.cs	0.00% <ø> (ø)
src/shell/dotnet/Shell/Popup/DefaultPopupPolicy.cs	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/Popup/PopupWindow.xaml	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/WebContent.xaml	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/Modules/ModuleService.cs	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/Layout/LayoutManager.cs	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/Popup/PopupWindow.xaml.cs	0.00% <0.00%> (ø)
... and 2 more

... and 4 files with indirect coverage changes