fix(cdk/clipboard): page jumping on iOS (#25221)
fix(cdk/clipboard): page jumping on iOS (#25221)

Fixes the page jump when copying to the clipboard on newer versions of iOS by making the temporary `textarea` readonly.

Fixes #25169.
crisbeto/material2,crisbeto/material2,crisbeto/material2,crisbeto/material2,angular/components,angular/components,angular/components,angular/components