[Misc] Minor fixes to IDE config and compiler warning

.vscode/settings.json

@@ -174,6 +174,7 @@
     "[xml]": {
         "editor.defaultFormatter": "redhat.vscode-xml"
     },
+    "C_Cpp.default.compileCommands": "${workspaceFolder}/build/compile_commands.json",
     "cSpell.words": [
         "cppcheck",
         "entrypoints",

src/shared/Modules/ValvesViewer/ValvesViewer.h

@@ -49,7 +49,7 @@ private:
 
     Filter filter;
     ValvesList::Valve currentState;
-    static constexpr char* baseStylesheet =
+    static constexpr const char* baseStylesheet =
         "border-bottom-width:1px;border-left-width:1px;border-top-width:"
         "1px;border-radius:0;";
 };