Fix: [Web] [WIP] focus orchestration for keyboard intent, programmatic restore

[mavrickdeveloper]

Explanation of Change

• This is the clean, fix-only extraction of the web focus work from fix: [Web] Focus restoration mechanism on back navigation (#76921) #79834.
• Route-level focus restoration now keeps keyboard intent separate from pointer and touch interactions. NavigationFocusManager stores interaction provenance, and FocusTrapForScreen only restores route focus when the navigation came from keyboard activation.
• Restored elements now go through a shared programmatic-focus helper so they get the programmatic-focus marker and use preventScroll: true.
• For single-select lists, the checkbox indicator is removed from the tab order so keyboard traversal stays on the row instead of falling into the nested control.

Fixed Issues

$ #76921
PROPOSAL: #76921 (comment)

Fixed sub issues

#85886
#85871
#85873
#85895
#85896
#85874
#85878
#85881
#85866
#85868

Tests

[codecov]

Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines	Coverage Δ
src/App.tsx	100.00% <100.00%> (ø)
...ts/SelectionList/ListItem/SingleSelectListItem.tsx	88.88% <ø> (+88.88%)	⬆️
...c/hooks/useSyncFocus/useSyncFocusImplementation.ts	100.00% <100.00%> (ø)
src/libs/Navigation/NavigationRoot.tsx	77.17% <100.00%> (+0.25%)	⬆️
src/libs/NavigationFocusManager/constants.ts	100.00% <100.00%> (ø)
...ponents/FocusTrap/FocusTrapForScreen/index.web.tsx	89.36% <97.05%> (+89.36%)	⬆️
src/hooks/useAccessibilityFocus/index.ts	0.00% <0.00%> (ø)
src/libs/NavigationFocusManager/index.ts	26.66% <26.66%> (ø)
...rc/libs/focusUtils/focusElementProgrammatically.ts	51.51% <51.51%> (ø)
src/libs/NavigationFocusManager/index.web.ts	90.39% <90.39%> (ø)
... and 21 files with indirect coverage changes