sqlite: re-enable JSON support

Close koreader#2225.

Author: benoit-pierre

thirdparty/sqlite/overlay/CMakeLists.txt

@@ -54,7 +54,6 @@ target_compile_definitions(sqlite3 PRIVATE
     SQLITE_OMIT_DECLTYPE
     SQLITE_OMIT_DEPRECATED
     SQLITE_OMIT_DESERIALIZE
-    SQLITE_OMIT_JSON
     SQLITE_OMIT_LOAD_EXTENSION=1
     SQLITE_OMIT_PROGRESS_CALLBACK
     SQLITE_OMIT_SHARED_CACHE