Revert "Removing ICU dependencies from skparagraph BUILD.gn file"

This reverts commit f1711adb1a04595eba1e9984976bfb92d41d0035.

Reason for revert: Build break

Original change's description:
> Removing ICU dependencies from skparagraph BUILD.gn file
> 
> (and from the sources, too)
> 
> Change-Id: I9d8ff51c91aad4b770b1f183c04734d31252b851
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/313148
> Commit-Queue: Julia Lavrova <jlavrova@google.com>
> Reviewed-by: Ben Wagner <bungeman@google.com>

TBR=bungeman@google.com,jlavrova@google.com

Change-Id: I1fce2436855e3e2a4cb7d1d7204b3ae49fd530e8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/314540
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Julia Lavrova <jlavrova@google.com>
24 files changed