[10.x] Str apa Add whitespace after punctuations

[faissaloux]

Helloo 👋

This PR Adds whitespace after each punctuation except the last one when using Str apa style.

See: https://apastyle.apa.org/style-grammar-guidelines/punctuation/space-after-period

Code

Str::apa('Real change,enduring change!happens one step at a time.  ');

Expected

Real Change, Enduring Change! Happens One Step at a Time.

Actual

Real Change,enduring Change!happens One Step at a Time.

[taylorotwell]

Not really that simple:

Str::apa('Learning Inertia.js');