Disable bitstring type check runtime hooks.

Introduce a build flag for the bitstring type check, put
runtime hooks behind the flag and set the flag to false.

Also add bitstring initialization for proxy classes, a test
and a benchmark for the type checks.

Test: m test-art-host-gtest
Test: testrunner.py --host --interpreter
Test: Repeat with kBitstringSubtypeCheckEnabled = true.
Bug: 73299705
Change-Id: Ibcd88a828c7addc0473d8c428818734f80226b19