Dialogs close from a button and rise from the bottom on phones

DModal draws a close button (✕, named by CloseText) beside its heading, in a header that stays in view while the box
scrolls; a long list of who liked a post left only the thin margins around the box to tap out of it. A new
ResponsiveBottom placement makes the box a sheet from the bottom below md and keeps it in the middle from md; the
report, liked-by and boosted-by, edit history and public notice dialogs use it. Boxes are at most 100dvh tall, so a
phone's browser bars don't cut them, and a bottom sheet leaves 3rem above itself and clears the home indicator. The
report dialog gets a Cancel button.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

Components/Content.razor

@@ -398,7 +398,7 @@
 						}
 						@if (isHistoryOpen)
 						{
-							<DModal IsOpen="true" IsOpenChanged="HistoryClosed" CloseText="@Localizer["Close"]" data-history-list>
+							<DModal Placement="DModalPlacement.ResponsiveBottom" IsOpen="true" IsOpenChanged="HistoryClosed" CloseText="@Localizer["Close"]" data-history-list>
 								<Heading>@Localizer["Edit history"]</Heading>
 								<ChildContent>
 									<ol class="flex flex-col gap-4 mt-3">