wifi settings: Fix incorrect maximum compativibility toggle behavior

Correct behavior:

maximize_compatibility (enabled) 2.4 GHz Single AP
maximize_compatibility (disabled) 5 GHz Preferred Single AP

Bug: 184802466
Bug: 184802508
Test: Manual Test to check toggle behavior
Test: RunSettingsRoboTests
Test: atest -c WifiTetherMaximizeCompatibilityPreferenceControllerTest
Change-Id: I0e97455ea9cf62294b50514ce912ef66d274db8d