fix(NcDateTimePickerNative): cleanup component usages, fix type check

- remove overwritten styles
- remove resolved comment

Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>

src/components/CalendarEventsDialog.vue

@@ -613,17 +613,8 @@ async function submitNewMeeting() {
 		width: calc(50% - var(--default-grid-baseline));
 		margin-bottom: var(--default-grid-baseline);
 
-		label {
-			margin-bottom: 2px;
-		}
-
-		input {
-			margin: 0;
-			border-width: 1px;
-		}
-
 		&.invalid-time input {
-			border-width: 2px;
+			--border-width-input: 2px;
 			border-color: var(--color-error);
 		}
 	}

src/components/RightSidebar/SearchMessages/SearchMessagesTab.vue

@@ -197,7 +197,6 @@ async function fetchSearchResults(isNew = true): Promise<void> {
 		const response = await request({
 			term,
 			person: fromUser.value?.id,
-			// FIXME: this might be invalid date. Remove after vue-lib bump: https://github.com/nextcloud-libraries/nextcloud-vue/pull/6387
 			since: sinceDate.value?.toISOString(),
 			until: untilDate.value?.toISOString(),
 			limit: searchLimit.value,