Remove @Immutable from Lazy.
Remove @Immutable from Lazy.

It isn't, given one implementation closes around a Supplier, which is not necessarily immutable.

PiperOrigin-RevId: 453866492

nawawi/closure-compiler,google/closure-compiler,nawawi/closure-compiler,monetate/closure-compiler,ChadKillingsworth/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,ChadKillingsworth/closure-compiler,google/closure-compiler,monetate/closure-compiler,google/closure-compiler,monetate/closure-compiler,google/closure-compiler,ChadKillingsworth/closure-compiler,nawawi/closure-compiler,nawawi/closure-compiler