Rollforward w/fix of "Use json encoding for cquery ParseResult"

Previous commit: commit fcc53f99.

Test: 1. use `TARGET_BUILD_VARIANT=userdebug TARGET_PRODUCT=aosp_arm64 build/bazel/ci/mixed_droid.sh` to verify no error occurred.
2. revise the test cases under request_type_test. 3. pass the test cases

Bug: 242587802
Change-Id: I7f70e62f7b6f42fa5f211772888040a0d07a710b