Update comments for kUnsupportedClassLoaderContextEncoding.

(partially cherry picked from
commit 60bf7f88d43ea1b2694732df8a59e6ff43bc816b)

Bug: 249984283
Test: N/A
Change-Id: I55c344f3f178e9749b3a0b8c169c1da49d2a3c37
Merged-In: I23f651f013672defb2e61af0a744ff6e6d128bfb
1 file changed