Prior to this change, in Ivy mode ngStyle/ngClass would accidentally emit value changes for static
(string-based) values even if the value itself had not changed. This patch ensures that
the style/class diffing code is more strict and when it signals ngClass/ngStyle that there has been
a value change.
Fixes#34336, #34444
PR Close#34307
Prior to ivy, undefined values passed in an object to the
ngStyle directive were ignored. Restore this behavior by
ignoring keys that point to undefined values.
closes#34310
PR Close#34422
Matias Niemelä
Michael Nahkies
Victor Berchet
Misko Hevery
Jason Aden