sys: timeutil: check for 32-bit time_t to avoid warning (part 2)

Same error had to be fixed in the branch where optimizations were done.

This is probably a good example of where using `if (IS_ENABLED()) ...`
is a better choice than using `#ifdef`. Because the compiler would have
caught this error last time as well.

Anyway, same problem - different line(s)!

A warning was propogated to error when building for
native_sim/native.

```
timeutil.h:682:17: error: result of comparison of constant \
  -9223372036854775808 with expression of type '__time_t' (aka 'long') \
  is always false [-Werror,-Wtautological-constant-out-of-range-compare]
timeutil.h:680:17: error: result of comparison of constant \
  -9223372036854775808 with expression of type '__time_t' (aka 'long') \
  is always false [-Werror,-Wtautological-constant-out-of-range-compare]
```

This is due to the issue described in #90029.

Add workarounds for `timespec_to_timeout()` and `timespec_negate()`
until 90029 is resolved.

Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>

Author: cfriedt

include/zephyr/sys/timeutil.h

@@ -677,9 +677,16 @@ static inline k_timeout_t timespec_to_timeout(const struct timespec *ts)
 #if defined(CONFIG_SPEED_OPTIMIZATIONS)
 
 	return (k_timeout_t){
-		.ticks = ((ts->tv_sec == INT64_MAX) && (ts->tv_nsec == NSEC_PER_SEC - 1)) *
+		/* note: must check for 32-bit size here until #90029 is resolved */
+		.ticks = ((sizeof(ts->tv_sec) == sizeof(int32_t) && (ts->tv_sec == INT32_MAX) &&
+			   (ts->tv_nsec == NSEC_PER_SEC - 1)) ||
+			  ((sizeof(ts->tv_sec) == sizeof(int64_t)) && (ts->tv_sec == INT64_MAX) &&
+			   (ts->tv_nsec == NSEC_PER_SEC - 1))) *
 				 K_TICKS_FOREVER +
-			 ((ts->tv_sec != INT64_MAX) && (ts->tv_sec >= 0)) *
+			 ((sizeof(ts->tv_sec) == sizeof(int32_t) && (ts->tv_sec == INT32_MAX) &&
+			   (ts->tv_nsec == NSEC_PER_SEC - 1)) ||
+			  ((sizeof(ts->tv_sec) == sizeof(int64_t)) && (ts->tv_sec != INT64_MAX) &&
+			   (ts->tv_sec >= 0))) *
 				 (IS_ENABLED(CONFIG_TIMEOUT_64BIT)
 					  ? (int64_t)(CLAMP(
 						    k_sec_to_ticks_floor64(ts->tv_sec) +