fix(bulk-exporter): selection banner follow-ups [] (#11278)

* feat(bulk-exporter): rename to Content Exporter, add select-all-matching

Rebrands the app display name from Entry/Bulk Exporter to Content
Exporter across the config screen, page, README, and app definition.
Also adds a Gmail-style select-all-across-pages flow to the results
table: once every row on the current page is checked, a banner offers
to select all entries matching the active search, and export reuses
the existing filtered-query export path so it scales beyond a single
fetched page instead of collecting every ID client-side.

* fix(bulk-exporter): match selection banner font sizes

Bump the selection bar sentence text from fontSizeS to fontSizeM so it
matches the TextLink action text's default size, fixing a visual
mismatch between the two.

* style(bulk-exporter): fix prettier formatting

CI's prettier check flagged these files; run prettier --write to
resolve.

* style(bulk-exporter): reformat with repo's pinned Prettier 2.8.8

Previous fix used an auto-installed Prettier 3 (different default
formatting), which didn't match the repo's pinned 2.8.8 + root
.prettierrc used by CI.

* fix(bulk-exporter): show row checkboxes as checked in select-all-matching mode

Row checkboxes only reflected selectedIds, so while selectAllMatching
was active the banner claimed every entry was selected but individual
rows still appeared unchecked. Include selectAllMatching in the
isChecked condition so rows visually match the banner state;
handleSelectOne already correctly deselects a single row and drops out
of select-all-matching mode on click.

Author: zacharyyankiver

apps/bulk-exporter/src/components/ResultsList.tsx

@@ -843,7 +843,7 @@ export function ResultsList({
                           }}>
                           {onSelectionChange && (
                             <Checkbox
-                              isChecked={selectedIds.includes(entry.sys.id)}
+                              isChecked={selectedIds.includes(entry.sys.id) || selectAllMatching}
                               onChange={() => handleSelectOne(entry.sys.id)}
                               aria-label={`Select ${getTitle(entry)}`}
                             />