Fix Java instrumentation compilation error for generic methods #188

Job	Run time
determine-changes / detect	11s
check-linked-issue	3s
coverage	7m 12s
type-check	24s
e2e-java (java-void-optimization-nogit, end_to_end_test_java_void_optimization.py, 70, true)	6m 39s
unit-tests (ubuntu-latest, 3.10)	7m 9s
e2e-java (java-fibonacci-nogit, end_to_end_test_java_fibonacci.py, 70, true)	32m 23s
unit-tests (ubuntu-latest, 3.12)	6m 52s
unit-tests (ubuntu-latest, 3.13)	6m 53s
unit-tests (ubuntu-latest, 3.9)	9m 18s
e2e-python (bubble-sort-unittest, end_to_end_test_bubblesort_unittest.py, 40)	9m 49s
e2e-java (java-tracer, end_to_end_test_java_tracer.py, 10)	7m 9s
unit-tests (windows-latest, 3.13)	10m 8s
e2e-python (futurehouse-structure, end_to_end_test_futurehouse.py, 5)	6m 44s
e2e-python (bubble-sort-pytest-nogit, end_to_end_test_bubblesort_pytest.py, 70, true)	12m 49s
unit-tests (ubuntu-latest, 3.11)	6m 58s
e2e-python (init-optimization, end_to_end_test_init_optimization.py, 10)	4m 52s
prek / prek	34s
e2e-python (coverage-e2e, end_to_end_test_coverage.py, black)	9m 45s
e2e-python (tracer-replay, end_to_end_test_tracer_replay.py, 10)	10m 2s
unit-tests (ubuntu-latest, 3.14)	6m 11s
e2e-python (benchmark-bubble-sort, end_to_end_test_benchmark_sort.py, 5)	11m 25s
e2e-python (async-optimization, end_to_end_test_async.py, 10)	3m 19s
e2e-python (topological-sort, end_to_end_test_topological_sort_worktree.py, 5)	4m 22s
e2e-js	0s
required checks passed	6s
	3h 1m 17s

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