Summary:
1. Introduces another highlight for link-selector rows, with the same color as
regular selection, and allowing to overlap with regular selection.
2. Don't show "secondary" cursors (those in inactive sections), to keep a single
cursor on the screen, since having multiple (which different in color) could
cause confusion.
3. An unrelated improvement (prompted by a new fixture doc) is to default the
active section to the top-left one (rather than the one with smallest rowId).
4. Another unrelated improvement (prompted by a test affected by the previous unrelated improvement) is to skip chart widgets when searching (previously search would step through those with an invisible "cursor").
Includes also tweaks for better testing on Arm-based Macs:
- Add support for TEST_CHROME_BINARY_PATH environment variable (helpful for a Mac arm64 architecture workaround)
- Remove unsetting of SELENIUM_REMOTE_URL when running headless (unlikely to affect anyone, and can be done outside the script, but interferes with the Mac workaround)
Test Plan: Added a new test case that cursor and linking-selector CSS classes are present or absent appropriately. Fixed test affected by the fix to default active section.
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D3891
