fix(listview): compact filters UX audit — focus, date apply, alignment

Fix autoFocus stealing focus from search: inject isOpen via cloneElement,
use InputRef.input.focus pattern from DrillBySubmenu (100ms delay, preventScroll).
Debounce remote fetch triggers with Constants.FAST_DEBOUNCE. Reset panel
search on close.

Add FilterPopoverContent wrapper with Apply button for date/numerical range
filters so cloneElement-injected onClose closes the dropdown on submit.
Hides inner FormLabel via CSS since the pill already shows the label.

Match DrillBySubmenu styling: iconSize="l"/colorIcon for search prefix,
colorTextDisabled for empty state, min-height: 35px for option rows,
container padding replaces SearchRow border, .ant-input-affix-wrapper
margin-bottom for visual separation, min-width: 220px, box-shadow: none
on the input.

Pass external loading prop to CompactSelectPanel. Change .controls to
align-items: center and hide search-filter-container label via CSS.
Add aria-label to pill when label is a string.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>