Fix datatype of queue item length macros (#1286)

The uxItemSize parameter in xQueueGenericCreate and
xQueueGeneenericCreateStatic APIs expects a UBaseType_t type.
Previously, the semSEMAPHORE_QUEUE_ITEM_LENGTH macro incorrectly cast
the value to uint8_t, causing type mismatch warnings. This change
resolves the issue by properly casting the value to UBaseType_t.

This issue was reported here: https://github.com/FreeRTOS/FreeRTOS-Kernel/issues/1285.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
diff --git a/include/semphr.h b/include/semphr.h
index 8977aca..7b44d78 100644
--- a/include/semphr.h
+++ b/include/semphr.h
@@ -37,8 +37,8 @@
 
 typedef QueueHandle_t SemaphoreHandle_t;
 
-#define semBINARY_SEMAPHORE_QUEUE_LENGTH    ( ( uint8_t ) 1U )
-#define semSEMAPHORE_QUEUE_ITEM_LENGTH      ( ( uint8_t ) 0U )
+#define semBINARY_SEMAPHORE_QUEUE_LENGTH    ( ( UBaseType_t ) 1U )
+#define semSEMAPHORE_QUEUE_ITEM_LENGTH      ( ( UBaseType_t ) 0U )
 #define semGIVE_BLOCK_TIME                  ( ( TickType_t ) 0U )