fix #26091: correct tick for staff text & symbol

See discussion in issue - http://musescore.org/en/node/26091

This appears to fix the issue at hand as well as work for all the test cases in the referenced issues.  The only question is https://github.com/musescore/MuseScore/commit/a201385f13f0458df06e824f6f7b5e6da8ff6f47.  I still don't know what problem that commit was fixing, and this PR will probably break that again.  I am hoping we can write off any scores that break as "corrupt".