Is your feature request related to a problem?
OPENTELEMETRY_ABI_VERSION_NO is by default 1 in Bazel, and there is no where to configure it, unlike CMake (WITH_ABI_VERSION_2).

Describe the solution you'd like
Consider adding a Bazel flag to allow changing OPENTELEMETRY_ABI_VERSION_NO as in https://github.com/open-telemetry/opentelemetry-cpp/blob/main/api/BUILD.

Describe alternatives you've considered
I tried to patch the Bazel build files.