Create HintSessionWrapper in RT right after CanvasContext

Move the construction of the HintSessionWrapper to RT right after the
creation of the CanvasContext to ensure enough time is provided to
not block the critical path in most cases.

Bug: 263755904
Test: manual
Change-Id: Ibab98b811de9056c51092286398d5c41c4d1d86b
Merged-In: I1a67b163acd9c41156d9b9e14e974c67b6ba6ed5
3 files changed