#8404: fix variable path regex to not switch to text entry mode during optional chaining

[twschiller]

What does this PR do?

• Closes Typing ? for null coalescing in variable field toggles to text entry mode #8404
• Closes Variable popover hides when using optional chaining #8241
• Fixes variable detection logic to support optional chaining to prevent auto-switching to text entry mode

Future Work

• Fix variable popover filtering logic to support optional chaining: Variable popover doesn't show results when using optional chaining #8636

Checklist

• Add jest or playwright tests and/or storybook stories
• Designate a primary reviewer: @fungairino

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.65%. Comparing base (18c5348) to head (6672d13).
Report is 32 commits behind head on main.

❗ Current head 6672d13 differs from pull request most recent head 3359226

Please upload reports for the commit 3359226 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8635      +/-   ##
==========================================
+ Coverage   73.63%   73.65%   +0.01%     
==========================================
  Files        1344     1344              
  Lines       41544    41577      +33     
  Branches     7767     7780      +13     
==========================================
+ Hits        30592    30624      +32     
- Misses      10952    10953       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

Playwright test results

 74 passed
 1 flaky
 2 skipped

Details

 Open report ↗︎
 77 tests across 26 suites
 11 minutes, 22 seconds
 3359226

Flaky tests

edgeSetup › auth.setup.ts › authenticate

Skipped tests

chrome › tests/runtime/googleSheetsIntegration.spec.ts › can activate a google spreadsheet mod with config options
edge › tests/runtime/googleSheetsIntegration.spec.ts › can activate a google spreadsheet mod with config options

[github-actions]

No loom links were found in the first post. Please add one there if you'd like to it to appear on Slack.

Do not edit this comment manually.