fix(Dav): make absenceform textarea not overlap

Signed-off-by: Grigory Vodyanov <scratchx@gmx.com>

Author: GVodyanov

apps/dav/src/components/AbsenceForm.vue

@@ -28,7 +28,7 @@
 			:options="options"
 			@search="asyncFind" />
 		<NcTextField v-model="status" :label="t('dav', 'Short absence status')" :required="true" />
-		<NcTextArea v-model="message" :label="t('dav', 'Long absence Message')" :required="true" />
+		<NcTextArea class="absence-long-message" v-model="message" :label="t('dav', 'Long absence Message')" :required="true" resize="none" rows="6"/>
 
 		<div class="absence__buttons">
 			<NcButton
@@ -271,6 +271,10 @@ export default {
 		}
 	}
 
+	.absence-long-message {
+		height: calc(var(--default-line-height) * 6 * var(--font-size-small) + var(--default-grid-baseline))
+	}
+
 	&__buttons {
 		display: flex;
 		gap: 5px;