GS/DX: Fix per game fullscreen mode setting

pcsx2-qt/Translations/pcsx2-qt_en.ts

@@ -2339,18 +2339,18 @@ Leaderboard Position: {1} of {2}</source>
     </message>
     <message>
         <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="103"/>
-        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="132"/>
+        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="137"/>
         <source>Invalid Address</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
         <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="119"/>
-        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="155"/>
+        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="160"/>
         <source>Invalid Condition</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="139"/>
+        <location filename="../Debugger/Breakpoints/BreakpointDialog.cpp" line="144"/>
         <source>Invalid Size</source>
         <translation type="unfinished"></translation>
     </message>

pcsx2/GS/Renderers/Common/GSDevice.cpp

@@ -244,7 +244,7 @@ const char* GSDevice::RenderAPIToString(RenderAPI api)
 
 bool GSDevice::GetRequestedExclusiveFullscreenMode(u32* width, u32* height, float* refresh_rate)
 {
-	const std::string mode = Host::GetBaseStringSettingValue("EmuCore/GS", "FullscreenMode", "");
+	const std::string mode = Host::GetStringSettingValue("EmuCore/GS", "FullscreenMode", "");
 	if (!mode.empty())
 	{
 		const std::string_view mode_view = mode;