Wifi Builders: multiple calls to build() should return different instances

Previous build() implementation simply returns
the object wrapped inside the builder.
The expected behavior should be to return a
new instance every time build() is called.

Bug: 148098082
Test: atest FrameworksWifiApiTests
Change-Id: If4c1cf45be155f32bea399ad0e3ec52b28f645a7
4 files changed