writerfilter: these are expected to be UTF-8

Change-Id: I8cd2ce341996a219ee885969de3482be422730b3
vcl: let the ModelessDialog ctor take an OUString

Change-Id: Iae88a9889c674337fb999a23a799d8730d2793d5
fdo#83204 RTF import: handle \pard<para props> after \bkmkstart

Change-Id: I4f5f0f653f2ce7782ec1d1fc5ef550a21a9c1d35
writerfilter: this is expected to be UTF-8

Change-Id: I7408be90f1ff552f4bb33e8a89d4b9075634e3e5
vcl: let the ModalDialog ctor take an OUString

Change-Id: I839435338f4acf80c40896b6c86f7ef122f5449d