[CAMEL-9960]create ReaderInputStream align encoding with Exchange

(cherry picked from commit 767a98b47aba44c7392dbb8b7f3c5f556e40682b)
(cherry picked from commit 0de81d1e029d30ca61446a7b8977c30c56f198a0)
(cherry picked from commit bb7fafabc4699389a10107611403bef48c81c8a7)
1 file changed