WiifConfigManagerNew: Fixing some nits

Changes in the CL:
1. Move the |set/clearNetworkCandidateScanResult| method to the
cluster of network setter/getter methods.
2. Rename "QNS" with "Network Selector" throughout the class.
3. Add an error log to all the versions of |getConfiguredNetwork|
and remove the log from the call sites.

BUG: 30156343
Change-Id: I22798f4ed36c11f369a93e2ada7dd45c80d38b89
TEST: Existing unit test.
1 file changed
tree: de133ea0d977677a37142f9698fc6c5cfa80424e
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/