🐛(home) fix invite form that didn't work with actual meeting urls

it worked with codes but not full urls!

src/frontend/src/features/home/components/JoinMeetingDialog.tsx

@@ -9,7 +9,12 @@ export const JoinMeetingDialog = () => {
     <Dialog title={t('joinMeeting')}>
       <Form
         onSubmit={(data) => {
-          navigateTo('room', data.roomId as string)
+          navigateTo(
+            'room',
+            (data.roomId as string)
+              .trim()
+              .replace(`${window.location.origin}/`, '')
+          )
         }}
         submitLabel={t('joinInputSubmit')}
       >

src/frontend/src/features/rooms/utils/isRoomValid.ts

@@ -1,4 +1,5 @@
 export const roomIdPattern = '[a-z]{3}-[a-z]{4}-[a-z]{3}'
 
-export const isRoomValid = (roomId: string) =>
-  new RegExp(`^${roomIdPattern}$`).test(roomId)
+export const isRoomValid = (roomIdOrUrl: string) =>
+  new RegExp(`^${roomIdPattern}$`).test(roomIdOrUrl) ||
+  new RegExp(`^${window.location.origin}/${roomIdPattern}$`).test(roomIdOrUrl)