[Team Builder] No apparent way to exit the champion selection menu.

In Team Builder, the user can see no apparent way to exit the champion selection menu.

Reproduction Steps:

1. Launch and log into the League of Legends client.
2. Select <Play>.
3. Under the <PvP> tab, select <Classic>.
4. Select <Summoner's Rift 5v5>.
5. Select <Normal Team Builder>.
6. Select either <Solo> or <Party>.
7. The select either <Select a Champion> or click the empty champion portrait.
8. Attempt to exit the opened menu without the [ESC] key.

Result: There is no way to exit the menu other than the [ESC] key or selection a champion.

Expected Result: There is an exit button or the [ESC] key is detailed as the button you press to exit the menu.

Reproduction Rate: 5/5

Notes: Low impact bug and I'm only reporting it because it merely bugs me, pun intended. The attached image is to show that there is no apparent escape option. (This is probably going to get KS or AD, but I just wanted to voice it.)