test_timer_duration_period fails with stm32 lptimer

[FRASTM]

When the LPTIMER is enabled, the kernel test timer/timer_api fails in the
"test_timer_duration_period: tdata.expire_cnt == 4 is false"

To Reproduce
Steps to reproduce the behavior:

1. Enable the LPTIMER in the proj.conf :
   CONFIG_STM32_LPTIM_TIMER=y
   CONFIG_STM32_LPTIM_CLOCK_LSE=y
2. mkdir build; cd build
3. cmake -DBOARD=board\nucleo_l4r5zi
4. make
5. See error
   "Assertion failed at ZEPHYR_BASE/tests/kernel/timer/timer_api/src/main.c:138: test_timer_duration_period: tdata.expire_cnt == 4 is false "

[FRASTM]

Due to the LPTIM clock source = LSE, the minimal tick period is set to 1000 per sec.
This makes one tick duration = about 33 lptim counting units

Note that the max possible timeout remains 2000ms , reached when the LPTIM counter = 0xFFFF

[FRASTM]

Applying the PR #24080
Plus a similar approach for the previous check in the testcase test_timer_remaining
zassert_true(rem_ticks <= (dur_ticks / 2) + 1 , NULL);

and it fixes for wb55 and l4r5 when the STM32_LPTIM_TIMER is defined

[carlescufi]

@erwango It doesn't seem this actually has a PR does it?

[erwango]

@carlescufi #20992 should be the one closing this.