Lucet: set min-reserved-size to the same value as max-heap-size

If <min-reserved-size> is less than <max-heap-size>, the code will
still assume that only <min-reserved-size> bytes are accessible and
will trap even if the runtime could allocate more..

So, `max` should always be <= `min`. Naming options is hard.

test/default/wasi-test-wrapper.sh

@@ -13,7 +13,7 @@ if [ -z "$WASI_RUNTIME" ] || [ "$WASI_RUNTIME" = "lucet" ]; then
     lucetc-wasi \
       --min-reserved-size "${MAX_MEMORY_MB}MiB" \
       -o "${1}.so" --opt-level best "$1" &&
-      lucet-wasi --dir=.:. "${1}.so" &&
+      lucet-wasi --dir=.:. --max-heap-size "${MAX_MEMORY_MB}MiB" "${1}.so" &&
       rm -f "${1}.so" && exit 0
   fi
 fi