added range checks in response to compiler overflow warnings

[jgiovatto]

Added range checks in response to compiler errors encountered when building on Fedora 43, gcc version 15.2.1 20260123 (Red Hat 15.2.1-7) (GCC)

srsRAN_4G_jgiovatto/lib/src/phy/fec/block/test/block_test.c:79:11: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
79 | tx[i] = (uint8_t)srsran_random_uniform_int_dist(random_gen, 0, 1);
| ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
srsRAN_4G_jgiovatto/lib/src/phy/fec/block/test/block_test.c:71:18: note: at offset 11 into destination object ‘tx’ of size 11
71 | uint8_t tx[SRSRAN_FEC_BLOCK_MAX_NOF_BITS] = {};

srsRAN_4G_jgiovatto/lib/src/phy/phch/test/pusch_test.c: In function ‘main’:
srsRAN_4G_jgiovatto/lib/src/phy/phch/test/pusch_test.c:305:42: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]

305 | uci_data_tx.value.ack.ack_value[a] = (uint8_t)srsran_random_uniform_int_dist(random_h, 0, 1);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from srsRAN_4G_jgiovatto/lib/include/srsran/phy/phch/pucch_cfg.h:27,
from srsRAN_4G_jgiovatto/lib/include/srsran/phy/ch_estimation/refsignal_ul.h:35,
from srsRAN_4G_jgiovatto/lib/include/srsran/phy/ch_estimation/chest_ul.h:43,
from srsRAN_4G_jgiovatto/lib/include/srsran/srsran.h:51,
from srsRAN_4G_jgiovatto/lib/src/phy/phch/test/pusch_test.c:22:
srsRAN_4G_jgiovatto/lib/include/srsran/phy/phch/uci_cfg.h:32:11: note: at offset 10 into destination object ‘ack_value’ of size 10
32 | uint8_t ack_value[SRSRAN_UCI_MAX_ACK_BITS];

Note: Errors in ans1_utils.h were previously addressed in the ubuntu 22.04 builds branch. The though here is to check the capacity of the "other" object.