tdf#111969 sw: acknowledge that last half-character for smart tags

This fixes CTRL-clicking on the last half-character of the smarttag
and having nothing happen, or triggering it
with the half-character before the smarttag.

This is a suggested follow-up to right-clicking on a selection,
which had the same problem.

smart tags need an extension to activate,
so a unit test is impractical in this case.

Change-Id: I151c28090b5a6701df16dab95992eeae2aec3ca3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/161033
Tested-by: Jenkins
Reviewed-by: Justin Luth <jluth@mail.com>

sw/source/core/crsr/crsrsh.cxx

@@ -4144,6 +4144,7 @@ void SwCursorShell::GetSmartTagRect( const Point& rPt, SwRect& rSelectRect )
     SwPosition aPos( *pCursor->GetPoint() );
     Point aPt( rPt );
     SwCursorMoveState eTmpState( CursorMoveState::SetOnlyText );
+    eTmpState.m_bPosMatchesBounds = true; // treat last half of character same as first half
     SwSpecialPos aSpecialPos;
     eTmpState.m_pSpecialPos = &aSpecialPos;
     SwTextNode *pNode;