Enable IDE0043 (Format string contains invalid placeholder) as build warning...

Enable IDE0043 (Format string contains invalid placeholder) as build warning for IDE projects (CodeStyle, Features and Workspaces layers)

.editorconfig

@@ -235,6 +235,9 @@ dotnet_diagnostic.IDE0036.severity = warning
 # IDE0040: Add accessibility modifiers
 dotnet_diagnostic.IDE0040.severity = warning
 
+# IDE0043: Format string contains invalid placeholder
+dotnet_diagnostic.IDE0043.severity = warning
+
 # IDE0044: Make field readonly
 dotnet_diagnostic.IDE0044.severity = warning