fix(frontend): replies to channel posts could change the visibility

packages/frontend/src/components/MkNote.vue

@@ -341,6 +341,7 @@ function reply(viaKeyboard = false): void {
 	pleaseLogin();
 	os.post({
 		reply: appearNote,
+		channel: appearNote.channel,
 		animation: !viaKeyboard,
 	}, () => {
 		focus();

packages/frontend/src/components/MkNoteDetailed.vue

@@ -320,6 +320,7 @@ function reply(viaKeyboard = false): void {
 	showMovedDialog();
 	os.post({
 		reply: appearNote,
+		channel: appearNote.channel,
 		animation: !viaKeyboard,
 	}, () => {
 		focus();