He never used word "Islamic State" as well, in fact he thoroughly disapproved the idea of having an Islamic State as pointed out in the article you yourself quoted in a previous post
Islamic Socialism and Islamic Democracy are compatible with secularism, no contradiction there
As pointed out by Begum Raana Liaquat Ali in an interview:
Question: But Pakistan was visualised as a Muslim homeland.
Ra'ana Liaquat Ali: Yes, but not the religious one of this type; it was a more liberal kind. Quaid-e-Azam himself said the basis was religious but Pakistan was visualised as secular and democratic. Today Pakistan is out and out a theocracy and under that garb, every vestige of personal freedom is snatched away. We are ruled with injunctions and ordinances as to what we should do, how we should dress, how we must relate to each other......
https://herald.dawn.com/news/1153802
That's exactly what Jinnah wanted, A Secular and Democratic Pakistan based on the Islamic principle of absolute equality of mankind !!
Also, on the night of March 7, 2011, Justice (retd) Javid Iqbal was interviewed on a TV channel on the nature of the Pakistani state. He held that Pakistan, as envisaged by Jinnah, was to be a secular state.:
https://tribune.com.pk/story/135012/was-jinnah-secular/