[WMikhail]

Scrolling to the top of a long Filters list currently snaps the first filter row to the top and hides its section heading. Keep the heading visible while preserving row alignment elsewhere by changing only the existing snapMode binding.

Fixes #1933.

Alternatives considered

Several alternatives were tested. Removing SnapToItem fixed the hidden heading but also removed row alignment throughout the list. Sticky section headings worked, but introduced a visible UI change. Adjusting the preferred highlight offset also passed the checks, although it changed alignment throughout the list and depended on row geometry.

Disabling snapping only at the upper boundary fixed the heading but interrupted downward scrolling. Adding an empty header, using a first-row threshold, or correcting the position after movement ended did not reliably resolve the issue.

The selected solution disables snapping while the list is moving or positioned at the very top. After scrolling stops elsewhere, SnapToItem restores row alignment. Including moving prevents snapping from being re-enabled during an active scroll, which would interrupt that movement. This keeps the heading visible and preserves alignment with a change to one existing property.

Validation

All 15 isolated Qt checks passed, covering wheel scrolling, inertia, row alignment, selection, keyboard navigation, scrollbar dragging, and filter reordering.

The checks load the actual AttachedFilters.qml component with a mock model and a minimal Metadata type on Qt 6.8.2, using the Basic controls style, the offscreen platform, and software rendering. The upstream version fails the heading visibility check with an 18-pixel offset; the patched version passes. The temporary test harness is outside the repository and is not included in this PR.

[ddennedy]

I tested and it works. Thank you!