fix(developer): layout builder - maintain presentation during undo

[mcdurdin]

Fixes #7852.

When undo is run in the layout builder, it is better to keep the user's selected presentation if possible. (The selected presentation is not stored in the undo stack, but is a view property affected by the currently selected platform.)

User Testing

• TEST_UNDO: In the Touch Layout tab of the keyboard editor, in View Controls, select 'iPad (Portait)' or 'iPhone (Portait)'. Make a change to the layout, and then press Ctrl+Z to undo (or use the Undo toolbar button). The view should remain as a portait view, and not switch back to landscape.

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ✅ TEST_UNDO (PASSED): Tested with Keyman Developer 17.0.204-alpha-test-9914 on Windows 11 OS (VM) and here is my observation: 1. Opened Khmer_Angkor project. 2. Set 'iPad (portrait) in View Controls tab. 3. Added a text in a key in the Phone layout. 4. Pressed the Ctrl+Z button to Undo the changes. 5. Observed that the portrait view remains in the layout view. Seems to be working as expected. (notes)

Test Artifacts

• Developer
  • Keyman Developer
  • Compiler Regression Tests
  • kmcomp.zip
• Keyboards
  • Test Keyboards

[darcywong00]

lgtm

[bharanidharanj]

Test Results

• TEST_UNDO (PASSED): Tested with Keyman Developer 17.0.204-alpha-test-9914 on Windows 11 OS (VM) and here is my observation: 1. Opened Khmer_Angkor project. 2. Set 'iPad (portrait) in View Controls tab. 3. Added a text in a key in the Phone layout. 4. Pressed the Ctrl+Z button to Undo the changes. 5. Observed that the portrait view remains in the layout view. Seems to be working as expected.

  

[keyman-server]

Changes in this pull request will be available for download in Keyman version 17.0.204-alpha