Minor fixes in preparation for python 3.11

[seanbudd]

Link to issue number:

In preparation for #12064

Summary of the issue:

• Certain types which are imported for type checking only are not correctly encapsulated by strings.
• threading.currentThread() is deprecated in favour of threading.current_thread()
• with Exception() as ex: syntax is no longer valid in 3.11
• in wxPython 4.2.0, integers are expected for scaling sizes
• in wxPython 4.2.0, using AppendColumn is preferred with our current syntax of adding width

Description of user facing changes

None

Description of development approach

Makes various backwards compatible fixes that become compatibility issues when upgrading to python 3.11

Testing strategy:

Test running NVDA with changes, tested in an experimental 3.11 branch as well

Known issues with pull request:

None

Code Review Checklist:

• Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• API is compatible with existing add-ons.
• Security precautions taken.

[AppVeyorBot]

• PASS: Unit tests.
• PASS: Translation comments check.
• FAIL: System tests (tags: installer NVDA). See test results for more information.
• Build (for testing PR): https://ci.appveyor.com/api/buildjobs/freuy1ik5w9v27om/artifacts/output/nvda_snapshot_pr15523-29409,fe2d6236.exe
• PASS: Lint check.
• CI timing (mins):
  INIT 0.0,
  INSTALL_START 1.1,
  INSTALL_END 1.0,
  BUILD_START 0.0,
  BUILD_END 25.3,
  TESTSETUP_START 0.0,
  TESTSETUP_END 0.3,
  TEST_START 0.0,
  TEST_END 14.3,
  FINISH_END 0.3

See test results for failed build of commit fe2d62368a

[AppVeyorBot]

• PASS: Translation comments check.
• PASS: Unit tests.
• PASS: Lint check.
• FAIL: System tests (tags: installer NVDA). See test results for more information.
• Build (for testing PR): https://ci.appveyor.com/api/buildjobs/8i3i1apraqv76t2a/artifacts/output/nvda_snapshot_pr15523-29422,fe2d6236.exe
• CI timing (mins):
  INIT 0.0,
  INSTALL_START 0.9,
  INSTALL_END 0.9,
  BUILD_START 0.0,
  BUILD_END 24.3,
  TESTSETUP_START 0.0,
  TESTSETUP_END 0.3,
  TEST_START 0.0,
  TEST_END 13.7,
  FINISH_END 0.1

See test results for failed build of commit fe2d62368a

[AppVeyorBot]

• PASS: Translation comments check.
• PASS: Unit tests.
• PASS: Lint check.
• FAIL: System tests (tags: installer NVDA). See test results for more information.
• Build (for testing PR): https://ci.appveyor.com/api/buildjobs/mlfmjk0f07fo49q2/artifacts/output/nvda_snapshot_pr15523-29432,3aa13ea1.exe
• CI timing (mins):
  INIT 0.0,
  INSTALL_START 0.9,
  INSTALL_END 0.9,
  BUILD_START 0.0,
  BUILD_END 23.8,
  TESTSETUP_START 0.0,
  TESTSETUP_END 0.3,
  TEST_START 0.0,
  TEST_END 8.1,
  FINISH_END 0.2

See test results for failed build of commit 3aa13ea13a

[AppVeyorBot]

• PASS: Translation comments check.
• PASS: Unit tests.
• PASS: Lint check.
• FAIL: System tests (tags: installer NVDA). See test results for more information.
• Build (for testing PR): https://ci.appveyor.com/api/buildjobs/nf9geu9odben7fw4/artifacts/output/nvda_snapshot_pr15523-29435,18b78da5.exe
• CI timing (mins):
  INIT 0.0,
  INSTALL_START 0.9,
  INSTALL_END 0.9,
  BUILD_START 0.0,
  BUILD_END 24.3,
  TESTSETUP_START 0.0,
  TESTSETUP_END 0.3,
  TEST_START 0.0,
  TEST_END 8.3,
  FINISH_END 0.1

See test results for failed build of commit 18b78da5b0