fix(form-field): error in older versions of edge (#19698)
fix(form-field): error in older versions of edge (#19698)

Some older versions of Edge will throw an error due to the way we were iterating over an `HTMLCollection`. This is actually something that TS throws a compilation error for, but we didn't catch it, because the variable was being inferred as `any`.

Fixes #17810.
crisbeto/material2,josephperrott/material2,angular/components,DevVersion/material2,Jefiozie/material2,angular/components,andrewseguin/material2,andrewseguin/material2,josephperrott/material2,angular/components,Jefiozie/material2,crisbeto/material2,mmalerba/material2,andrewseguin/material2,angular/components,DevVersion/material2,josephperrott/material2,DevVersion/material2,crisbeto/material2,Jefiozie/material2,crisbeto/material2,andrewseguin/material2,andrewseguin/material2,josephperrott/material2,mmalerba/material2,mmalerba/material2,Jefiozie/material2,mmalerba/material2,mmalerba/material2,josephperrott/material2,DevVersion/material2,Jefiozie/material2,DevVersion/material2