[BPF] Fix the interface_usdt_utxocache.py test

Summary: This is broken on new version of the dependencies, causing a link issue of the BPF program when there is no probe associated with the perf output. Cutting the program into 2 pieces, and use the relevant ons in the test fixes the issue.

Test Plan:

cmake -GNinja .. -DENABLE_TRACING=1
sudo ./test/functional/test_runner.py interface_usdt_utxocache

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D16024