If I type your sentence into Adobe InDesign, Affinity Publisher, MS Word, or Pages, I get something very much like this in all of them:
I have standard UK English language settings, and these apps have not been configured in any special way. I can find no additional settings to display curved quotes while still having straight apostrophes in any of them.
As you say, I can ‘force’ a straight apostrophe using CTRL ', and this for me works in Pages and other apps (but not in Word, interestingly).
However, in many years of working in book publishing and typesetting, I have never heard of the (desirable) practice of using straight marks for apostrophes.
Hart’s Rules for Compositors and Readers (OUP) gives clear examples of curved apostrophes in contractions; as do Robert Bringhurst’s The Elements of Typographic Style and The Thames & Hudson Manual of Typography.
I have been unable to find any authority that commends it: most condemn it as a vestige from the use of typewriters.
Your assertion that it is “correct English” is, I’d suggest, not the prevailing view, which might explain why Pages, and other apps, don’t follow it.
Changing the language to US English doesn’t straighten apostrophes for me, so that would suggest that it’s not local variation. (Also, I have many US books on my shelves and I cannot find a single one favoring this style.)
If you really wanted this, you could configure Auto-Correct with common words like won’t, can’t; so that the straight form would replace the typed form.
