Setting value on forced signal causes implicit release on Riviera

[ktbarrett]

In test_force_release.test_cocotb_writes_dont_overwrite_force_registered when the forced signal is erroneously attempted to be overwritten using a normal deposit, the deposit does not succeed, but it does implicitly Release the signal. This causes the process to update the driven signal prematurely causing a test failure.

# COUT:    110.00ns INFO     cocotb.regression                  running test_force_release.test_cocotb_writes_dont_overwrite_force_registered (6/7)
# COUT:                                                             Test Deposits following a Force don't overwrite the value.
# COUT:    150.01ns INFO     cocotb.regression                  test_force_release.test_cocotb_writes_dont_overwrite_force_registered failed
# COUT:                                                         Traceback (most recent call last):
# COUT:                                                           File "/opt/actions-runner/_work/cocotb/cocotb/tests/test_cases/test_force_release/test_force_release.py", line 116, in test_cocotb_writes_dont_overwrite_force_registered
# COUT:                                                             assert dut.stream_out_data_registered.value == 10
# COUT:                                                         AssertionError: assert LogicArray('01001101', Range(7, 'downto', 0)) == 10
# COUT:                                                          +  where LogicArray('01001101', Range(7, 'downto', 0)) = LogicObject(sample_module.stream_out_data_registered).value
# COUT:                                                          +    where LogicObject(sample_module.stream_out_data_registered) = HierarchyObject(sample_module).stream_out_data_registered