Update java.lang.String class size.

In standalone desugar, one of the implemented interface CharSequence has
two lambdas:

lambda$chars$0$CharSequence
lambda$codePoints$1$CharSequence

which are virtual functions.

In D8 Desugar, both of them are now direct methods.

Bug: 69477285
Test: USE_D8_DESUGAR=true m && USE_D8_DESUGAR=false m
Change-Id: I94aaa42e86bd104fc86fa14d1eb45b2e906da5a9