Kati fails to translate # in ninja mode

[[Test code](https://github.com/littlekernel/lk/blob/master/make/macros.mk)]
```
bar:
$(foreach var,foo,echo #define $(var);)
```

[Expected build.ninja]
rule rule0
description = build $out
command = /bin/sh -c "**echo #define foo**"
build bar: rule0

[Actual build.ninja]
rule rule0
description = build $out
command = /bin/sh -c "**echo**"
build bar: rule0