fix: SA violation fixes and simplification for idle task length restrictions (#1227)

fix: SA violation fixes and simplification for idle task length restrictions

This change:
* Removes the dependency on strings.h for the prvCreateIdleTask function
* Resolves several static analysis violations reported by tools like Parasoft

Builds off of - https://github.com/FreeRTOS/FreeRTOS-Kernel/pull/1203

MISRA.md

@@ -115,6 +115,25 @@ _Ref 11.5.5_
    because data storage buffers are implemented as uint8_t arrays for the
    ease of sizing, alignment and access.
 
+#### Rule 14.3
+
+MISRA C-2012 Rule 14.3: Controlling expressions shall not be invariant.
+
+_Ref 14.3_
+ - The `configMAX_TASK_NAME_LEN` and `taskRESERVED_TASK_NAME_LENGTH` are
+   evaluated to constants at compile time and may vary based on the build
+   configuration.
+
+#### Rule 18.1
+
+MISRA C-2012 Rule 18.1: A pointer resulting from arithmetic on a pointer operand
+shall address an element of the same array as that pointer operand.
+
+_Ref 18.1_
+ - Array access remains within bounds since either the null terminator in
+   the IDLE task name will break the loop, or the loop will break normally
+   if the array size is smaller than the IDLE task name length.
+
 #### Rule 21.6
 
 MISRA C-2012 Rule 21.6: The Standard Library input/output functions shall not